973
FPUS55 KTFX 220147
ZFPTFX
ZONE FORECAST PRODUCT FOR CENTRAL AND SOUTHWEST MONTANA
NATIONAL WEATHER SERVICE GREAT FALLS MT
747 PM MDT THU MAY 21 2026
SPOT TEMPERATURES AND PROBABILITIES OF MEASURABLE PRECIPITATION
ARE FOR THE REST OF TONIGHT, FRIDAY, FRIDAY NIGHT, AND SATURDAY.
MTZ301-221000-
EAST GLACIER PARK REGION-
INCLUDING THE CITIES OF EAST GLACIER PARK, KIOWA, BABB,
SAINT MARY, MARIAS PASS, AND LOGAN PASS
747 PM MDT THU MAY 21 2026
REST OF TONIGHT
MOSTLY CLOUDY UNTIL EARLY MORNING THEN
BECOMING PARTLY CLOUDY. LOWS 32 TO 38. SOUTHWEST WINDS UP TO
10 MPH.
FRIDAY
NOT AS COOL. MOSTLY SUNNY. A 20 PERCENT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS 49 TO 61. WEST WINDS 5 TO
10 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF
THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT.
LOWS 36 TO 42. SOUTHWEST WINDS 5 TO 10 MPH.
SATURDAY
WARMER. MOSTLY SUNNY. HIGHS 54 TO 66. SOUTHWEST WINDS
5 TO 20 MPH. GUSTS UP TO 35 MPH IN THE AFTERNOON.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS 42 TO 48. SOUTHWEST WINDS
10 TO 15 MPH. GUSTS UP TO 40 MPH DECREASING TO 30 MPH AFTER
MIDNIGHT.
SUNDAY THROUGH MEMORIAL DAY
BREEZY. PARTLY CLOUDY. HIGHS 56 TO
69. LOWS 42 TO 48.
MONDAY NIGHT
MOSTLY CLOUDY WITH A 50 PERCENT CHANCE OF RAIN.
LOWS 40 TO 46.
TUESDAY
PARTLY SUNNY. CHANCE OF RAIN IN THE MORNING, THEN RAIN
SHOWERS LIKELY AND SLIGHT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. HIGHS 51 TO 61. CHANCE OF PRECIPITATION 60 PERCENT.
TUESDAY NIGHT AND WEDNESDAY
MOSTLY CLOUDY. CHANCE OF RAIN
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS. LOWS 38 TO 44. HIGHS
49 TO 59. CHANCE OF PRECIPITATION 50 PERCENT.
WEDNESDAY NIGHT AND THURSDAY
MOSTLY CLOUDY. CHANCE OF RAIN
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS. LOWS 38 TO 44. HIGHS
51 TO 61. CHANCE OF PRECIPITATION 40 PERCENT.
MTZ307-221000-
SOUTHERN ROCKY MOUNTAIN FRONT-
INCLUDING THE CITY OF ROGERS PASS
747 PM MDT THU MAY 21 2026
REST OF TONIGHT
PARTLY CLOUDY IN THE EVENING THEN BECOMING
MOSTLY CLOUDY. LOWS 28 TO 34. WEST WINDS UP TO 5 MPH.
FRIDAY
NOT AS COOL. MOSTLY SUNNY. A 20 PERCENT CHANCE OF RAIN
SHOWERS IN THE AFTERNOON. HIGHS 48 TO 60. WEST WINDS UP TO
10 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF RAIN
SHOWERS IN THE EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT. LOWS
32 TO 38. WEST WINDS UP TO 10 MPH. GUSTS UP TO 20 MPH IN THE
EVENING.
SATURDAY
WARMER. MOSTLY SUNNY. HIGHS 53 TO 67. WEST WINDS UP
TO 15 MPH. GUSTS UP TO 30 MPH IN THE AFTERNOON.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS 38 TO 44. WEST WINDS 5 TO
10 MPH WITH GUSTS TO AROUND 35 MPH.
SUNDAY
SUNNY. HIGHS 56 TO 70.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS 38 TO 46.
MEMORIAL DAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF RAIN IN THE
AFTERNOON. HIGHS 60 TO 72.
MONDAY NIGHT
MOSTLY CLOUDY WITH A 30 PERCENT CHANCE OF RAIN.
LOWS 40 TO 46.
TUESDAY
PARTLY SUNNY. CHANCE OF RAIN IN THE MORNING, THEN RAIN
SHOWERS LIKELY AND SLIGHT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. HIGHS 52 TO 64. CHANCE OF PRECIPITATION 70 PERCENT.
TUESDAY NIGHT AND WEDNESDAY
MOSTLY CLOUDY. CHANCE OF RAIN
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS. LOWS 37 TO 43. HIGHS
50 TO 60. CHANCE OF PRECIPITATION 50 PERCENT.
WEDNESDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
WITH SLIGHT CHANCE OF RAIN AFTER MIDNIGHT. LOWS 37 TO 43. CHANCE
OF PRECIPITATION 30 PERCENT.
THURSDAY
PARTLY SUNNY. SLIGHT CHANCE OF RAIN IN THE MORNING,
THEN CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS 52 TO 62. CHANCE OF PRECIPITATION
30 PERCENT.
MTZ302-221000-
NORTHERN HIGH PLAINS-
INCLUDING THE CITIES OF BROWNING, HEART BUTTE, AND DUPUYER
747 PM MDT THU MAY 21 2026
REST OF TONIGHT
MOSTLY CLOUDY. LOWS IN THE MID 30S. WEST WINDS
5 TO 10 MPH.
FRIDAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS IN THE MID 60S. WEST WINDS UP TO 10 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF
THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT.
LOWS IN THE LOWER 40S. WEST WINDS 5 TO 10 MPH.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 70S. WEST WINDS 5 TO
15 MPH. GUSTS UP TO 30 MPH IN THE AFTERNOON.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S. SOUTHWEST
WINDS 5 TO 15 MPH WITH GUSTS TO AROUND 30 MPH.
SUNDAY THROUGH MEMORIAL DAY
BREEZY. PARTLY CLOUDY. HIGHS 72 TO
78. LOWS IN THE UPPER 40S.
MONDAY NIGHT
MOSTLY CLOUDY WITH A 40 PERCENT CHANCE OF RAIN.
LOWS IN THE MID 40S.
TUESDAY THROUGH WEDNESDAY
BREEZY. MOSTLY CLOUDY WITH CHANCE OF
RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS. HIGHS IN THE MID
60S. LOWS IN THE LOWER 40S. CHANCE OF PRECIPITATION 50 PERCENT.
WEDNESDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
WITH SLIGHT CHANCE OF RAIN AFTER MIDNIGHT. LOWS IN THE LOWER 40S.
CHANCE OF PRECIPITATION 40 PERCENT.
THURSDAY
MOSTLY SUNNY. SLIGHT CHANCE OF RAIN IN THE MORNING,
THEN SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS IN
THE MID 60S. CHANCE OF PRECIPITATION 20 PERCENT.
MTZ308-221000-
SOUTHERN HIGH PLAINS-
INCLUDING THE CITIES OF BYNUM, CHOTEAU, AND PENDROY
747 PM MDT THU MAY 21 2026
REST OF TONIGHT
PARTLY CLOUDY WITH A 20 PERCENT CHANCE OF RAIN
SHOWERS IN THE EVENING, THEN MOSTLY CLOUDY AFTER MIDNIGHT. LOWS
IN THE MID 30S. NORTHWEST WINDS UP TO 5 MPH SHIFTING TO THE
SOUTHWEST AFTER MIDNIGHT.
FRIDAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF RAIN SHOWERS IN
THE AFTERNOON. HIGHS IN THE MID 60S. WEST WINDS UP TO 5 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF RAIN
SHOWERS IN THE EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT. LOWS
IN THE LOWER 40S. WEST WINDS UP TO 10 MPH.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE MID 70S. SOUTHWEST WINDS
UP TO 10 MPH.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S. WEST
WINDS 5 TO 10 MPH. GUSTS UP TO 30 MPH IN THE EVENING.
SUNDAY AND SUNDAY NIGHT
PARTLY CLOUDY. HIGHS IN THE UPPER 70S.
LOWS IN THE UPPER 40S.
MEMORIAL DAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF RAIN IN THE
AFTERNOON. HIGHS AROUND 80.
MONDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN IN THE EVENING,
THEN PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN AFTER MIDNIGHT.
LOWS AROUND 50. CHANCE OF RAIN 30 PERCENT.
TUESDAY THROUGH WEDNESDAY
MOSTLY CLOUDY WITH CHANCE OF RAIN
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS. HIGHS IN THE UPPER
60S. LOWS IN THE UPPER 40S. CHANCE OF PRECIPITATION 50 PERCENT.
WEDNESDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
WITH SLIGHT CHANCE OF RAIN AFTER MIDNIGHT. LOWS IN THE UPPER 40S.
CHANCE OF PRECIPITATION 40 PERCENT.
THURSDAY
MOSTLY SUNNY. SLIGHT CHANCE OF RAIN IN THE MORNING,
THEN SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS IN
THE UPPER 60S. CHANCE OF PRECIPITATION 20 PERCENT.
MTZ303-221000-
EASTERN GLACIER, WESTERN TOOLE, AND CENTRAL PONDERA-
INCLUDING THE CITIES OF CUT BANK, ETHRIDGE, AND SANTA RITA
747 PM MDT THU MAY 21 2026
REST OF TONIGHT
PARTLY CLOUDY UNTIL EARLY MORNING THEN
BECOMING MOSTLY CLOUDY. A 20 PERCENT CHANCE OF RAIN SHOWERS IN
THE EVENING. LOWS IN THE MID 30S. NORTHEAST WINDS UP TO 10 MPH
SHIFTING TO THE SOUTHWEST AFTER MIDNIGHT.
FRIDAY
PARTLY SUNNY. A 20 PERCENT CHANCE OF RAIN SHOWERS IN
THE AFTERNOON. HIGHS IN THE UPPER 60S. WEST WINDS UP TO 5 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF
THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT.
LOWS AROUND 40. WEST WINDS UP TO 10 MPH.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE MID 70S. WEST WINDS UP TO
15 MPH.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 40S. SOUTHWEST
WINDS 5 TO 15 MPH. GUSTS UP TO 30 MPH IN THE EVENING.
SUNDAY THROUGH MEMORIAL DAY
BREEZY. PARTLY CLOUDY. HIGHS IN
THE UPPER 70S. LOWS IN THE UPPER 40S.
MONDAY NIGHT
MOSTLY CLOUDY WITH A 40 PERCENT CHANCE OF RAIN.
LOWS IN THE UPPER 40S.
TUESDAY AND TUESDAY NIGHT
BREEZY. MOSTLY CLOUDY. CHANCE OF
RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS. HIGHS IN THE
LOWER 70S. LOWS IN THE MID 40S. CHANCE OF PRECIPITATION
50 PERCENT.
WEDNESDAY
BREEZY. PARTLY SUNNY. CHANCE OF RAIN IN THE MORNING,
THEN CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS IN THE MID 60S. CHANCE OF PRECIPITATION
50 PERCENT.
WEDNESDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
WITH SLIGHT CHANCE OF RAIN AFTER MIDNIGHT. LOWS IN THE MID 40S.
CHANCE OF PRECIPITATION 40 PERCENT.
THURSDAY
MOSTLY SUNNY. SLIGHT CHANCE OF RAIN IN THE MORNING,
THEN SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS IN
THE UPPER 60S. CHANCE OF PRECIPITATION 20 PERCENT.
TEMPERATURE / PRECIPITATION
CUT BANK 34 67 39 74 / 20 20 20 0
MTZ304-221000-
EASTERN TOOLE AND LIBERTY-
INCLUDING THE CITIES OF DEVON, SHELBY, CHESTER, GALATA, JOPLIN,
LOTHAIR, AND WHITLASH
747 PM MDT THU MAY 21 2026
REST OF TONIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF RAIN
SHOWERS IN THE EVENING. LOWS IN THE MID 30S. NORTH WINDS UP TO
10 MPH SHIFTING TO THE SOUTH AFTER MIDNIGHT.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S. SOUTHWEST WINDS
UP TO 5 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY IN THE EVENING THEN BECOMING PARTLY
CLOUDY. LOWS IN THE LOWER 40S. SOUTHWEST WINDS UP TO 5 MPH.
SATURDAY
SUNNY. HIGHS IN THE MID 70S. SOUTHWEST WINDS UP TO
10 MPH.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 40S. SOUTHWEST
WINDS 5 TO 10 MPH.
SUNDAY
SUNNY. HIGHS 77 TO 83.
SUNDAY NIGHT AND MEMORIAL DAY
PARTLY CLOUDY. LOWS AROUND 50.
HIGHS 79 TO 85.
MONDAY NIGHT
PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN IN THE
EVENING, THEN MOSTLY CLOUDY WITH CHANCE OF RAIN AFTER MIDNIGHT.
LOWS AROUND 50. CHANCE OF RAIN 30 PERCENT.
TUESDAY
MOSTLY SUNNY. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE MID 70S. CHANCE
OF PRECIPITATION 30 PERCENT.
TUESDAY NIGHT
MOSTLY CLOUDY WITH A 50 PERCENT CHANCE OF RAIN.
LOWS IN THE UPPER 40S.
WEDNESDAY
PARTLY SUNNY. CHANCE OF RAIN IN THE MORNING, THEN
CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. HIGHS AROUND 70. CHANCE OF PRECIPITATION 50 PERCENT.
WEDNESDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
WITH SLIGHT CHANCE OF RAIN AFTER MIDNIGHT. LOWS IN THE MID 40S.
CHANCE OF PRECIPITATION 40 PERCENT.
THURSDAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS AROUND 70.
MTZ305-221000-
HILL COUNTY-
INCLUDING THE CITY OF HAVRE
747 PM MDT THU MAY 21 2026
REST OF TONIGHT
MOSTLY CLEAR. A 20 PERCENT CHANCE OF RAIN
SHOWERS IN THE EVENING. PATCHY FOG EARLY IN THE MORNING. LOWS IN
THE MID 30S. NORTH WINDS UP TO 10 MPH SHIFTING TO THE WEST AFTER
MIDNIGHT.
FRIDAY
MOSTLY SUNNY. PATCHY FOG IN THE MORNING. HIGHS IN THE
UPPER 60S. SOUTHWEST WINDS UP TO 5 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 40S. SOUTHEAST
WINDS UP TO 10 MPH.
SATURDAY
SUNNY. HIGHS IN THE UPPER 70S. SOUTHWEST WINDS UP TO
10 MPH.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S. SOUTHWEST
WINDS 5 TO 15 MPH.
SUNDAY
SUNNY. HIGHS IN THE LOWER 80S.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S.
MEMORIAL DAY
SUNNY. HIGHS IN THE MID 80S.
MONDAY NIGHT
PARTLY CLOUDY WITH A 20 PERCENT CHANCE OF RAIN IN
THE EVENING, THEN MOSTLY CLOUDY AFTER MIDNIGHT. LOWS IN THE LOWER
50S.
TUESDAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS AROUND 80.
TUESDAY NIGHT
MOSTLY CLOUDY WITH A 50 PERCENT CHANCE OF RAIN.
LOWS IN THE UPPER 40S.
WEDNESDAY
PARTLY SUNNY. CHANCE OF RAIN IN THE MORNING, THEN
CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. HIGHS IN THE MID 70S. CHANCE OF PRECIPITATION
40 PERCENT.
WEDNESDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
WITH SLIGHT CHANCE OF RAIN AFTER MIDNIGHT. LOWS IN THE UPPER 40S.
CHANCE OF PRECIPITATION 30 PERCENT.
THURSDAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS IN THE MID 70S.
TEMPERATURE / PRECIPITATION
HAVRE 34 70 39 79 / 20 0 0 0
MTZ306-221000-
NORTHERN BLAINE COUNTY-
INCLUDING THE CITIES OF CHINOOK, ZURICH, HARLEM, HOGELAND,
AND FORT BELKNAP
747 PM MDT THU MAY 21 2026
REST OF TONIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF RAIN
SHOWERS IN THE EVENING. PATCHY FOG AFTER MIDNIGHT. LOWS IN THE
MID 30S. NORTHWEST WINDS UP TO 10 MPH.
FRIDAY
SUNNY. PATCHY FOG IN THE MORNING. HIGHS IN THE UPPER
60S. NORTHWEST WINDS UP TO 5 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 40S. EAST WINDS
UP TO 10 MPH.
SATURDAY
SUNNY. HIGHS IN THE MID 70S. SOUTHEAST WINDS UP TO
10 MPH SHIFTING TO THE SOUTHWEST IN THE AFTERNOON.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S. SOUTH
WINDS 5 TO 10 MPH.
SUNDAY
SUNNY. HIGHS IN THE LOWER 80S.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S.
MEMORIAL DAY
SUNNY. HIGHS IN THE MID 80S.
MONDAY NIGHT
PARTLY CLOUDY WITH A 20 PERCENT CHANCE OF RAIN.
LOWS IN THE MID 50S.
TUESDAY
BREEZY. MOSTLY SUNNY. A 20 PERCENT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE LOWER 80S.
TUESDAY NIGHT
WINDY. MOSTLY CLOUDY WITH A 40 PERCENT CHANCE OF
RAIN. LOWS IN THE LOWER 50S.
WEDNESDAY
BREEZY. PARTLY SUNNY. CHANCE OF RAIN IN THE MORNING,
THEN CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS IN THE MID 70S. CHANCE OF PRECIPITATION
40 PERCENT.
WEDNESDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
AFTER MIDNIGHT. LOWS IN THE UPPER 40S. CHANCE OF PRECIPITATION
30 PERCENT.
THURSDAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS IN THE MID 70S.
MTZ309-221000-
EASTERN PONDERA AND EASTERN TETON-
INCLUDING THE CITIES OF BRADY, CONRAD, AND LEDGER
747 PM MDT THU MAY 21 2026
REST OF TONIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF RAIN
SHOWERS IN THE EVENING. LOWS IN THE MID 30S. NORTHWEST WINDS UP
TO 5 MPH SHIFTING TO THE SOUTHWEST AFTER MIDNIGHT.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S. SOUTHWEST WINDS
UP TO 5 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY IN THE EVENING THEN BECOMING PARTLY
CLOUDY. LOWS IN THE UPPER 30S. WEST WINDS UP TO 5 MPH.
SATURDAY
SUNNY. HIGHS IN THE UPPER 70S. SOUTHWEST WINDS UP TO
10 MPH.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 40S. SOUTHWEST
WINDS 5 TO 10 MPH.
SUNDAY AND SUNDAY NIGHT
PARTLY CLOUDY. HIGHS IN THE LOWER 80S.
LOWS IN THE UPPER 40S.
MEMORIAL DAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF RAIN IN THE
AFTERNOON. HIGHS IN THE LOWER 80S.
MONDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN IN THE EVENING,
THEN PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN AFTER MIDNIGHT.
LOWS IN THE UPPER 40S. CHANCE OF RAIN 30 PERCENT.
TUESDAY
PARTLY SUNNY. SLIGHT CHANCE OF RAIN IN THE MORNING,
THEN CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS IN THE MID 70S. CHANCE OF PRECIPITATION
40 PERCENT.
TUESDAY NIGHT AND WEDNESDAY
MOSTLY CLOUDY. CHANCE OF RAIN
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE MID 40S.
HIGHS IN THE UPPER 60S. CHANCE OF PRECIPITATION 50 PERCENT.
WEDNESDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
WITH SLIGHT CHANCE OF RAIN AFTER MIDNIGHT. LOWS IN THE MID 40S.
CHANCE OF PRECIPITATION 30 PERCENT.
THURSDAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS AROUND 70.
MTZ310-221000-
WESTERN AND CENTRAL CHOUTEAU COUNTY-
INCLUDING THE CITIES OF FLOWEREE, CARTER, AND FORT BENTON
747 PM MDT THU MAY 21 2026
REST OF TONIGHT
MOSTLY CLEAR. A 20 PERCENT CHANCE OF RAIN
SHOWERS IN THE EVENING. LOWS IN THE MID 30S. NORTHWEST WINDS UP
TO 10 MPH SHIFTING TO THE SOUTHWEST AFTER MIDNIGHT.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S. SOUTHWEST WINDS
UP TO 5 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY IN THE EVENING THEN BECOMING PARTLY
CLOUDY. LOWS IN THE LOWER 40S. SOUTH WINDS UP TO 10 MPH.
SATURDAY
SUNNY. HIGHS IN THE UPPER 70S. SOUTHWEST WINDS UP TO
10 MPH.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S. SOUTHWEST
WINDS UP TO 10 MPH.
SUNDAY
SUNNY. HIGHS IN THE LOWER 80S.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S.
MEMORIAL DAY
SUNNY. HIGHS IN THE MID 80S.
MONDAY NIGHT
PARTLY CLOUDY IN THE EVENING THEN BECOMING MOSTLY
CLOUDY. A 20 PERCENT CHANCE OF RAIN. LOWS IN THE LOWER 50S.
TUESDAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS IN THE UPPER 70S.
TUESDAY NIGHT AND WEDNESDAY
MOSTLY CLOUDY. CHANCE OF RAIN
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE UPPER
40S. HIGHS IN THE LOWER 70S. CHANCE OF PRECIPITATION 50 PERCENT.
WEDNESDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
WITH SLIGHT CHANCE OF RAIN AFTER MIDNIGHT. LOWS IN THE UPPER 40S.
CHANCE OF PRECIPITATION 30 PERCENT.
THURSDAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS IN THE LOWER 70S.
MTZ311-221000-
BEARS PAW MOUNTAINS AND SOUTHERN BLAINE-
INCLUDING THE CITY OF ROCKY BOY
747 PM MDT THU MAY 21 2026
REST OF TONIGHT
MOSTLY CLEAR. A 20 PERCENT CHANCE OF RAIN
SHOWERS IN THE EVENING. LOWS IN THE UPPER 30S. WEST WINDS UP TO
10 MPH.
FRIDAY
WARMER, SUNNY. HIGHS 63 TO 69. NORTHWEST WINDS UP TO
10 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 40S. EAST WINDS
UP TO 5 MPH SHIFTING TO THE SOUTH AFTER MIDNIGHT.
SATURDAY
WARMER, SUNNY. HIGHS 71 TO 77. SOUTHWEST WINDS UP TO
10 MPH.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 50. SOUTHWEST WINDS
UP TO 10 MPH.
SUNDAY
SUNNY. HIGHS 77 TO 83.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S.
MEMORIAL DAY
SUNNY. HIGHS 81 TO 87.
MONDAY NIGHT
PARTLY CLOUDY WITH A 20 PERCENT CHANCE OF RAIN IN
THE EVENING, THEN MOSTLY CLOUDY AFTER MIDNIGHT. LOWS IN THE MID
50S.
TUESDAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS 77 TO 83.
TUESDAY NIGHT
MOSTLY CLOUDY WITH A 50 PERCENT CHANCE OF RAIN.
LOWS IN THE LOWER 50S.
WEDNESDAY
PARTLY SUNNY. CHANCE OF RAIN IN THE MORNING, THEN
CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. HIGHS 70 TO 76. CHANCE OF PRECIPITATION 50 PERCENT.
WEDNESDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
WITH SLIGHT CHANCE OF RAIN AFTER MIDNIGHT. LOWS AROUND 50. CHANCE
OF PRECIPITATION 30 PERCENT.
THURSDAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS 70 TO 76.
MTZ312-221000-
CASCADE COUNTY BELOW 5000FT-
INCLUDING THE CITY OF GREAT FALLS
747 PM MDT THU MAY 21 2026
REST OF TONIGHT
MOSTLY CLOUDY EARLY IN THE EVENING THEN
BECOMING PARTLY CLOUDY. A 20 PERCENT CHANCE OF RAIN SHOWERS IN
THE EVENING. LOWS IN THE MID 30S. SOUTHWEST WINDS UP TO 10 MPH.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S. SOUTHWEST WINDS
UP TO 10 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY IN THE EVENING THEN BECOMING PARTLY
CLOUDY. LOWS IN THE LOWER 40S. SOUTHWEST WINDS UP TO 10 MPH.
SATURDAY
WARMER, SUNNY. HIGHS 72 TO 78. SOUTHWEST WINDS UP TO
10 MPH.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 40S. SOUTHWEST
WINDS 5 TO 10 MPH.
SUNDAY
SUNNY. HIGHS 77 TO 83.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S.
MEMORIAL DAY
SUNNY. A 20 PERCENT CHANCE OF RAIN IN THE
AFTERNOON. HIGHS IN THE LOWER 80S.
MONDAY NIGHT
PARTLY CLOUDY. CHANCE OF RAIN IN THE EVENING,
THEN SLIGHT CHANCE OF RAIN AFTER MIDNIGHT. LOWS IN THE LOWER 50S.
CHANCE OF RAIN 30 PERCENT.
TUESDAY
MOSTLY SUNNY. SLIGHT CHANCE OF RAIN IN THE MORNING,
THEN CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS IN THE MID 70S. CHANCE OF PRECIPITATION
50 PERCENT.
TUESDAY NIGHT AND WEDNESDAY
MOSTLY CLOUDY. CHANCE OF RAIN
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE UPPER
40S. HIGHS IN THE UPPER 60S. CHANCE OF PRECIPITATION 50 PERCENT.
WEDNESDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
WITH SLIGHT CHANCE OF RAIN AFTER MIDNIGHT. LOWS IN THE UPPER 40S.
CHANCE OF PRECIPITATION 40 PERCENT.
THURSDAY
MOSTLY SUNNY. SLIGHT CHANCE OF RAIN IN THE MORNING,
THEN SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS
AROUND 70. CHANCE OF PRECIPITATION 20 PERCENT.
TEMPERATURE / PRECIPITATION
GREAT FALLS ARPT 36 68 41 76 / 20 10 10 0
MTZ313-221000-
JUDITH BASIN COUNTY AND JUDITH GAP-
INCLUDING THE CITIES OF RAYNESFORD, GEYSER, STANFORD, WINDHAM,
BENCHLAND, HOBSON, AND MOCCASIN
747 PM MDT THU MAY 21 2026
REST OF TONIGHT
MOSTLY CLEAR. A 20 PERCENT CHANCE OF RAIN
SHOWERS IN THE EVENING. LOWS IN THE MID 30S. WEST WINDS 5 TO
10 MPH.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 60S. NORTHWEST WINDS
UP TO 5 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 40. SOUTHWEST WINDS UP
TO 10 MPH.
SATURDAY
SUNNY. HIGHS IN THE LOWER 70S. WEST WINDS UP TO
10 MPH.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 40S. SOUTHWEST
WINDS UP TO 15 MPH.
SUNDAY AND SUNDAY NIGHT
MOSTLY CLEAR. HIGHS IN THE UPPER 70S.
LOWS IN THE UPPER 40S.
MEMORIAL DAY
SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS AROUND 80.
MONDAY NIGHT
PARTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS IN
THE EVENING, THEN SLIGHT CHANCE OF RAIN AFTER MIDNIGHT. LOWS IN
THE LOWER 50S. CHANCE OF PRECIPITATION 20 PERCENT.
TUESDAY
MOSTLY SUNNY. SLIGHT CHANCE OF RAIN IN THE MORNING,
THEN CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS IN THE MID 70S. CHANCE OF PRECIPITATION
50 PERCENT.
TUESDAY NIGHT AND WEDNESDAY
MOSTLY CLOUDY. CHANCE OF RAIN
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE UPPER
40S. HIGHS IN THE UPPER 60S. CHANCE OF PRECIPITATION 50 PERCENT.
WEDNESDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
AFTER MIDNIGHT. LOWS IN THE MID 40S. CHANCE OF PRECIPITATION
40 PERCENT.
THURSDAY
MOSTLY SUNNY. SLIGHT CHANCE OF RAIN IN THE MORNING,
THEN CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE UPPER
60S. CHANCE OF PRECIPITATION 40 PERCENT.
MTZ314-221000-
FERGUS COUNTY BELOW 4500FT-
INCLUDING THE CITIES OF HILGER AND LEWISTOWN
747 PM MDT THU MAY 21 2026
REST OF TONIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF RAIN
SHOWERS IN THE EVENING. LOWS IN THE UPPER 30S. WEST WINDS UP TO
10 MPH. GUSTS UP TO 25 MPH IN THE EVENING.
FRIDAY
SUNNY. HIGHS IN THE MID 60S. NORTHWEST WINDS UP TO
10 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 40S. EAST WINDS
UP TO 5 MPH SHIFTING TO THE SOUTH AFTER MIDNIGHT.
SATURDAY
WARMER, SUNNY. HIGHS 72 TO 78. WEST WINDS UP TO
10 MPH.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 40S. SOUTHWEST
WINDS UP TO 10 MPH.
SUNDAY THROUGH MEMORIAL DAY
MOSTLY CLEAR. HIGHS 78 TO 88. LOWS
IN THE LOWER 50S.
MONDAY NIGHT AND TUESDAY
PARTLY CLOUDY. A 20 PERCENT CHANCE OF
THUNDERSTORMS. LOWS IN THE MID 50S. HIGHS 77 TO 83.
TUESDAY NIGHT AND WEDNESDAY
MOSTLY CLOUDY. CHANCE OF RAIN
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS. LOWS 48 TO 54. HIGHS
70 TO 76. CHANCE OF PRECIPITATION 50 PERCENT.
WEDNESDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
WITH SLIGHT CHANCE OF RAIN AFTER MIDNIGHT. LOWS 46 TO 52. CHANCE
OF PRECIPITATION 30 PERCENT.
THURSDAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS 70 TO 76.
TEMPERATURE / PRECIPITATION
LEWISTOWN 33 63 38 73 / 20 10 10 0
MTZ315-221000-
UPPER BLACKFOOT AND MACDONALD PASS-
INCLUDING THE CITIES OF MARYSVILLE, LINCOLN, FLESHER PASS,
AND MACDONALD PASS
747 PM MDT THU MAY 21 2026
REST OF TONIGHT
PARTLY CLOUDY IN THE EVENING THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE LOWER 30S. WEST WINDS UP TO 5 MPH.
FRIDAY
NOT AS COOL. MOSTLY SUNNY. HIGHS 54 TO 64. WEST WINDS
UP TO 10 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY IN THE EVENING THEN CLEARING. LOWS
IN THE UPPER 30S. WEST WINDS UP TO 5 MPH. GUSTS UP TO 20 MPH IN
THE EVENING.
SATURDAY
WARMER, SUNNY. HIGHS 60 TO 70. SOUTHWEST WINDS UP TO
5 MPH SHIFTING TO THE WEST 5 TO 15 MPH IN THE AFTERNOON.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 40S. WEST WINDS
UP TO 10 MPH WITH GUSTS TO AROUND 25 MPH.
SUNDAY
SUNNY. HIGHS 64 TO 74.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 40S.
MEMORIAL DAY
SUNNY IN THE MORNING, THEN PARTLY SUNNY WITH
CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. HIGHS 68 TO 76. CHANCE OF PRECIPITATION 30 PERCENT.
MONDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN IN THE EVENING,
THEN PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN AFTER MIDNIGHT.
LOWS IN THE MID 40S. CHANCE OF RAIN 30 PERCENT.
TUESDAY
MOSTLY SUNNY WITH SLIGHT CHANCE OF RAIN IN THE
MORNING, THEN MOSTLY CLOUDY WITH RAIN SHOWERS LIKELY AND SLIGHT
CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS 58 TO 66. CHANCE
OF PRECIPITATION 60 PERCENT.
TUESDAY NIGHT AND WEDNESDAY
MOSTLY CLOUDY. CHANCE OF RAIN
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE LOWER
40S. HIGHS 55 TO 63. CHANCE OF PRECIPITATION 50 PERCENT.
WEDNESDAY NIGHT
MOSTLY CLOUDY WITH A 30 PERCENT CHANCE OF RAIN
IN THE EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT. LOWS IN THE
LOWER 40S.
THURSDAY
MOSTLY SUNNY. SLIGHT CHANCE OF RAIN IN THE MORNING,
THEN CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS 57 TO 65. CHANCE OF PRECIPITATION
30 PERCENT.
MTZ316-221000-
GATES OF THE MOUNTAINS-
INCLUDING THE CITIES OF CANYON CREEK, WOLF CREEK, AND CRAIG
747 PM MDT THU MAY 21 2026
REST OF TONIGHT
PARTLY CLOUDY UNTIL EARLY MORNING THEN
BECOMING MOSTLY CLOUDY. A 20 PERCENT CHANCE OF RAIN SHOWERS IN
THE EVENING. LOWS IN THE MID 30S. NORTH WINDS UP TO 5 MPH
SHIFTING TO THE SOUTHWEST AFTER MIDNIGHT.
FRIDAY
WARMER. MOSTLY SUNNY. HIGHS 60 TO 68. SOUTH WINDS UP TO
10 MPH SHIFTING TO THE WEST IN THE AFTERNOON.
FRIDAY NIGHT
MOSTLY CLOUDY IN THE EVENING THEN BECOMING PARTLY
CLOUDY. LOWS IN THE LOWER 40S. WEST WINDS UP TO 5 MPH.
SATURDAY
WARMER, SUNNY. HIGHS 67 TO 75. SOUTHWEST WINDS UP TO
10 MPH.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S. SOUTHWEST
WINDS UP TO 10 MPH WITH GUSTS TO AROUND 25 MPH.
SUNDAY
SUNNY. HIGHS 71 TO 79.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S.
MEMORIAL DAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS 73 TO 81.
MONDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN IN THE EVENING,
THEN PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN AFTER MIDNIGHT.
LOWS IN THE UPPER 40S. CHANCE OF RAIN 30 PERCENT.
TUESDAY
MOSTLY SUNNY. SLIGHT CHANCE OF RAIN IN THE MORNING,
THEN CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS 64 TO 72. CHANCE OF PRECIPITATION
50 PERCENT.
TUESDAY NIGHT AND WEDNESDAY
MOSTLY CLOUDY. CHANCE OF RAIN
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE MID 40S.
HIGHS 61 TO 67. CHANCE OF PRECIPITATION 50 PERCENT.
WEDNESDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
WITH SLIGHT CHANCE OF RAIN AFTER MIDNIGHT. LOWS IN THE MID 40S.
CHANCE OF PRECIPITATION 40 PERCENT.
THURSDAY
MOSTLY SUNNY. SLIGHT CHANCE OF RAIN IN THE MORNING,
THEN CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS 63 TO 69. CHANCE OF PRECIPITATION
30 PERCENT.
MTZ317-221000-
LITTLE BELT AND HIGHWOOD MOUNTAINS-
INCLUDING THE CITIES OF MONARCH, NEIHART, AND KINGS HILL PASS
747 PM MDT THU MAY 21 2026
REST OF TONIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF RAIN
SHOWERS AND SNOW SHOWERS IN THE EVENING. LOWS 29 TO 35. NORTHWEST
WINDS UP TO 10 MPH SHIFTING TO THE SOUTHWEST AFTER MIDNIGHT.
FRIDAY
NOT AS COOL. MOSTLY SUNNY. A 20 PERCENT CHANCE OF RAIN
SHOWERS IN THE AFTERNOON. HIGHS 52 TO 60. WEST WINDS UP TO
10 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF RAIN
SHOWERS IN THE EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT. LOWS
34 TO 42. WEST WINDS UP TO 5 MPH SHIFTING TO THE SOUTHWEST AFTER
MIDNIGHT.
SATURDAY
WARMER, SUNNY. HIGHS 60 TO 68. SOUTHWEST WINDS UP TO
15 MPH.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS 41 TO 49. SOUTHWEST WINDS
UP TO 10 MPH WITH GUSTS TO AROUND 25 MPH.
SUNDAY AND SUNDAY NIGHT
MOSTLY CLEAR. HIGHS 66 TO 74. LOWS
43 TO 51.
MEMORIAL DAY
SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS 70 TO 76.
MONDAY NIGHT
PARTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS IN
THE EVENING, THEN SLIGHT CHANCE OF RAIN AFTER MIDNIGHT. LOWS
45 TO 53. CHANCE OF PRECIPITATION 20 PERCENT.
TUESDAY
PARTLY SUNNY. SLIGHT CHANCE OF RAIN IN THE MORNING,
THEN CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS 64 TO 70.
CHANCE OF PRECIPITATION 50 PERCENT.
TUESDAY NIGHT AND WEDNESDAY
MOSTLY CLOUDY. CHANCE OF RAIN
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS. LOWS 42 TO 48. HIGHS
58 TO 64. CHANCE OF PRECIPITATION 50 PERCENT.
WEDNESDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
AFTER MIDNIGHT. LOWS 41 TO 47. CHANCE OF PRECIPITATION
40 PERCENT.
THURSDAY
PARTLY SUNNY. SLIGHT CHANCE OF RAIN IN THE MORNING,
THEN CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS 59 TO 65.
CHANCE OF PRECIPITATION 40 PERCENT.
MTZ318-221000-
SNOWY AND JUDITH MOUNTAINS-
747 PM MDT THU MAY 21 2026
REST OF TONIGHT
MOSTLY CLEAR. SLIGHT CHANCE OF THUNDERSTORMS
EARLY IN THE EVENING, THEN SLIGHT CHANCE OF RAIN SHOWERS LATE IN
THE EVENING. LOWS IN THE LOWER 30S. WEST WINDS UP TO 10 MPH.
GUSTS UP TO 30 MPH IN THE EVENING. CHANCE OF PRECIPITATION
20 PERCENT.
FRIDAY
NOT AS COOL. SUNNY. HIGHS 54 TO 62. NORTHWEST WINDS UP
TO 10 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 30S. WEST WINDS
UP TO 5 MPH SHIFTING TO THE SOUTH AFTER MIDNIGHT.
SATURDAY
WARMER, SUNNY. HIGHS 62 TO 70. WEST WINDS UP TO
10 MPH.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS 43 TO 49. SOUTHWEST WINDS
UP TO 10 MPH.
SUNDAY THROUGH MEMORIAL DAY
MOSTLY CLEAR. HIGHS 69 TO 81. LOWS
46 TO 52.
MONDAY NIGHT
PARTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS IN
THE EVENING, THEN SLIGHT CHANCE OF RAIN AFTER MIDNIGHT. LOWS IN
THE LOWER 50S. CHANCE OF PRECIPITATION 20 PERCENT.
TUESDAY
MOSTLY SUNNY. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS IN THE AFTERNOON. HIGHS 68 TO 76. CHANCE OF
PRECIPITATION 30 PERCENT.
TUESDAY NIGHT AND WEDNESDAY
MOSTLY CLOUDY. CHANCE OF RAIN
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE UPPER
40S. HIGHS 62 TO 68. CHANCE OF PRECIPITATION 50 PERCENT.
WEDNESDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
WITH SLIGHT CHANCE OF RAIN AFTER MIDNIGHT. LOWS IN THE MID 40S.
CHANCE OF PRECIPITATION 30 PERCENT.
THURSDAY
MOSTLY SUNNY. SLIGHT CHANCE OF RAIN IN THE MORNING,
THEN CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS 62 TO 68.
CHANCE OF PRECIPITATION 30 PERCENT.
MTZ319-221000-
HELENA VALLEY-
INCLUDING THE CITY OF HELENA
747 PM MDT THU MAY 21 2026
REST OF TONIGHT
PARTLY CLOUDY UNTIL EARLY MORNING THEN
BECOMING MOSTLY CLOUDY. LOWS IN THE MID 30S. NORTHWEST WINDS UP
TO 5 MPH SHIFTING TO THE SOUTH AFTER MIDNIGHT.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S. SOUTHEAST WINDS
UP TO 5 MPH SHIFTING TO THE NORTHWEST IN THE AFTERNOON.
FRIDAY NIGHT
MOSTLY CLOUDY IN THE EVENING THEN BECOMING PARTLY
CLOUDY. LOWS IN THE UPPER 30S. NORTHWEST WINDS UP TO 5 MPH
SHIFTING TO THE SOUTHWEST AFTER MIDNIGHT.
SATURDAY
SUNNY. HIGHS IN THE MID 70S. SOUTH WINDS UP TO 5 MPH
SHIFTING TO THE WEST IN THE AFTERNOON.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 40S. SOUTHWEST
WINDS UP TO 10 MPH.
SUNDAY
SUNNY. HIGHS AROUND 80.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 40S.
MEMORIAL DAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE LOWER 80S.
MONDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN IN THE EVENING,
THEN PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN AFTER MIDNIGHT.
LOWS IN THE UPPER 40S. CHANCE OF RAIN 30 PERCENT.
TUESDAY
PARTLY SUNNY. SLIGHT CHANCE OF RAIN IN THE MORNING,
THEN CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE LOWER
70S. CHANCE OF PRECIPITATION 50 PERCENT.
TUESDAY NIGHT AND WEDNESDAY
MOSTLY CLOUDY. CHANCE OF RAIN
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE MID 40S.
HIGHS IN THE UPPER 60S. CHANCE OF PRECIPITATION 50 PERCENT.
WEDNESDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
AFTER MIDNIGHT. LOWS IN THE MID 40S. CHANCE OF PRECIPITATION
30 PERCENT.
THURSDAY
MOSTLY SUNNY. SLIGHT CHANCE OF RAIN IN THE MORNING,
THEN CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS AROUND 70.
CHANCE OF PRECIPITATION 30 PERCENT.
TEMPERATURE / PRECIPITATION
HELENA 35 68 40 75 / 0 10 10 0
MTZ320-221000-
BIG BELT, BRIDGER AND CASTLE MOUNTAINS-
INCLUDING THE CITIES OF TRIDENT, MAUDLOW, BATTLE RIDGE PASS,
BOZEMAN PASS, AND DEEP CREEK PASS
747 PM MDT THU MAY 21 2026
REST OF TONIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF RAIN
SHOWERS AND SNOW SHOWERS IN THE EVENING. LOWS 28 TO 34. NORTH
WINDS UP TO 10 MPH SHIFTING TO THE WEST AFTER MIDNIGHT. GUSTS UP
TO 25 MPH.
FRIDAY
NOT AS COOL. MOSTLY SUNNY. HIGHS 51 TO 61. WEST WINDS
UP TO 10 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY IN THE EVENING THEN BECOMING PARTLY
CLOUDY. LOWS IN THE UPPER 30S. NORTHWEST WINDS UP TO 5 MPH
SHIFTING TO THE SOUTH AFTER MIDNIGHT. GUSTS UP TO 20 MPH.
SATURDAY
WARMER, SUNNY. HIGHS 59 TO 69. SOUTHWEST WINDS UP TO
15 MPH. GUSTS UP TO 35 MPH IN THE AFTERNOON.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 40S. WEST WINDS
5 TO 10 MPH WITH GUSTS TO AROUND 30 MPH SHIFTING TO THE SOUTH
WITH GUSTS TO AROUND 20 MPH AFTER MIDNIGHT.
SUNDAY
WARMER, SUNNY. HIGHS 65 TO 75.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S.
MEMORIAL DAY
SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS 69 TO 77.
MONDAY NIGHT
MOSTLY CLOUDY IN THE EVENING THEN BECOMING PARTLY
CLOUDY. A 20 PERCENT CHANCE OF RAIN. LOWS IN THE UPPER 40S.
TUESDAY
MOSTLY SUNNY. SLIGHT CHANCE OF RAIN IN THE MORNING,
THEN CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS 62 TO 70. CHANCE OF PRECIPITATION
50 PERCENT.
TUESDAY NIGHT AND WEDNESDAY
MOSTLY CLOUDY. CHANCE OF RAIN
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE MID 40S.
HIGHS 57 TO 65. CHANCE OF PRECIPITATION 50 PERCENT.
WEDNESDAY NIGHT AND THURSDAY
PARTLY CLOUDY. CHANCE OF RAIN
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE LOWER
40S. HIGHS 58 TO 66. CHANCE OF PRECIPITATION 40 PERCENT.
MTZ321-221000-
MEAGHER COUNTY VALLEYS-
INCLUDING THE CITIES OF MARTINSDALE, CHECKERBOARD, RINGLING,
AND WHITE SULPHUR SPRINGS
747 PM MDT THU MAY 21 2026
REST OF TONIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF RAIN
SHOWERS IN THE EVENING. PATCHY FOG EARLY IN THE MORNING. LOWS IN
THE LOWER 30S. NORTHWEST WINDS UP TO 10 MPH SHIFTING TO THE EAST
AFTER MIDNIGHT.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 60S. WEST WINDS UP TO
10 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY IN THE EVENING THEN BECOMING PARTLY
CLOUDY. LOWS IN THE MID 30S. NORTHWEST WINDS UP TO 5 MPH WITH
GUSTS TO AROUND 20 MPH SHIFTING TO THE SOUTH AFTER MIDNIGHT.
SATURDAY
SUNNY. HIGHS IN THE UPPER 60S. SOUTHWEST WINDS UP TO
5 MPH SHIFTING TO THE WEST 5 TO 15 MPH IN THE AFTERNOON.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 40S. SOUTHWEST
WINDS UP TO 10 MPH. GUSTS UP TO 25 MPH IN THE EVENING.
SUNDAY AND SUNDAY NIGHT
MOSTLY CLEAR. HIGHS IN THE MID 70S.
LOWS IN THE MID 40S.
MEMORIAL DAY
SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS IN THE UPPER 70S.
MONDAY NIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF RAIN IN THE
EVENING. LOWS IN THE MID 40S.
TUESDAY
MOSTLY SUNNY. SLIGHT CHANCE OF RAIN IN THE MORNING,
THEN CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE LOWER
70S. CHANCE OF PRECIPITATION 50 PERCENT.
TUESDAY NIGHT AND WEDNESDAY
MOSTLY CLOUDY. CHANCE OF RAIN
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE LOWER
40S. HIGHS IN THE MID 60S. CHANCE OF PRECIPITATION 50 PERCENT.
WEDNESDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
AFTER MIDNIGHT. LOWS IN THE LOWER 40S. CHANCE OF PRECIPITATION
30 PERCENT.
THURSDAY
MOSTLY SUNNY. SLIGHT CHANCE OF RAIN IN THE MORNING,
THEN CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS IN THE MID 60S. CHANCE OF PRECIPITATION
40 PERCENT.
MTZ322-221000-
ELKHORN AND BOULDER MOUNTAINS-
INCLUDING THE CITIES OF MONTANA CITY, CLANCY, BOULDER, CORBIN,
WICKES, ELK PARK PASS, AND HOMESTAKE PASS
747 PM MDT THU MAY 21 2026
REST OF TONIGHT
PARTLY CLOUDY UNTIL EARLY MORNING THEN
BECOMING MOSTLY CLOUDY. LOWS 28 TO 34. NORTHWEST WINDS UP TO
5 MPH WITH GUSTS TO AROUND 20 MPH SHIFTING TO THE WEST AFTER
MIDNIGHT.
FRIDAY
NOT AS COOL. MOSTLY SUNNY. A 20 PERCENT CHANCE OF RAIN
SHOWERS IN THE AFTERNOON. HIGHS 53 TO 63. SOUTHWEST WINDS UP TO
5 MPH SHIFTING TO THE NORTHWEST IN THE AFTERNOON.
FRIDAY NIGHT
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF RAIN
SHOWERS IN THE EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT. LOWS
34 TO 40. NORTHWEST WINDS UP TO 5 MPH WITH GUSTS TO AROUND 20 MPH
SHIFTING TO THE WEST AFTER MIDNIGHT.
SATURDAY
WARMER. MOSTLY SUNNY. HIGHS 60 TO 70. SOUTHWEST WINDS
UP TO 10 MPH WITH GUSTS TO AROUND 25 MPH.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS 40 TO 46. WEST WINDS UP TO
10 MPH WITH GUSTS TO AROUND 25 MPH.
SUNDAY
SUNNY. HIGHS 65 TO 75.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS 42 TO 48.
MEMORIAL DAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS 67 TO 77.
MONDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
WITH SLIGHT CHANCE OF RAIN AFTER MIDNIGHT. LOWS 42 TO 48. CHANCE
OF PRECIPITATION 40 PERCENT.
TUESDAY
PARTLY SUNNY. SLIGHT CHANCE OF RAIN IN THE MORNING,
THEN CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS 58 TO 68.
CHANCE OF PRECIPITATION 50 PERCENT.
TUESDAY NIGHT
MOSTLY CLOUDY. RAIN SHOWERS LIKELY AND SLIGHT
CHANCE OF THUNDERSTORMS IN THE EVENING, THEN CHANCE OF RAIN AFTER
MIDNIGHT. LOWS 38 TO 44. CHANCE OF PRECIPITATION 60 PERCENT.
WEDNESDAY
PARTLY SUNNY. CHANCE OF RAIN IN THE MORNING, THEN
CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. HIGHS 55 TO 63. CHANCE OF PRECIPITATION 50 PERCENT.
WEDNESDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
AFTER MIDNIGHT. LOWS 38 TO 44. CHANCE OF PRECIPITATION
40 PERCENT.
THURSDAY
MOSTLY SUNNY. SLIGHT CHANCE OF RAIN IN THE MORNING,
THEN CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS 57 TO 65.
CHANCE OF PRECIPITATION 30 PERCENT.
MTZ323-221000-
CANYON FERRY AREA-
INCLUDING THE CITIES OF TOSTON, TOWNSEND, AND WINSTON
747 PM MDT THU MAY 21 2026
REST OF TONIGHT
PARTLY CLOUDY UNTIL EARLY MORNING THEN
BECOMING MOSTLY CLOUDY. A 20 PERCENT CHANCE OF RAIN SHOWERS IN
THE EVENING. LOWS IN THE MID 30S. NORTH WINDS UP TO 5 MPH WITH
GUSTS TO AROUND 20 MPH SHIFTING TO THE SOUTHEAST AFTER MIDNIGHT.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S. SOUTH WINDS UP TO
10 MPH SHIFTING TO THE WEST IN THE AFTERNOON.
FRIDAY NIGHT
MOSTLY CLOUDY IN THE EVENING THEN BECOMING PARTLY
CLOUDY. LOWS IN THE LOWER 40S. NORTH WINDS UP TO 5 MPH SHIFTING
TO THE SOUTH AFTER MIDNIGHT.
SATURDAY
SUNNY. HIGHS IN THE LOWER 70S. SOUTH WINDS UP TO
10 MPH. GUSTS UP TO 25 MPH IN THE AFTERNOON.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 40S. NORTHWEST
WINDS UP TO 10 MPH SHIFTING TO THE SOUTHWEST AFTER MIDNIGHT.
SUNDAY
SUNNY. HIGHS IN THE UPPER 70S.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S.
MEMORIAL DAY
SUNNY. HIGHS AROUND 80.
MONDAY NIGHT
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF
THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT.
LOWS IN THE UPPER 40S.
TUESDAY
MOSTLY SUNNY. SLIGHT CHANCE OF RAIN IN THE MORNING,
THEN CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE LOWER
70S. CHANCE OF PRECIPITATION 50 PERCENT.
TUESDAY NIGHT AND WEDNESDAY
MOSTLY CLOUDY. CHANCE OF RAIN
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE MID 40S.
HIGHS IN THE UPPER 60S. CHANCE OF PRECIPITATION 50 PERCENT.
WEDNESDAY NIGHT
PARTLY CLOUDY. CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING. LOWS IN THE MID
40S. CHANCE OF PRECIPITATION 30 PERCENT.
THURSDAY
MOSTLY SUNNY. SLIGHT CHANCE OF RAIN IN THE MORNING,
THEN CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS IN THE UPPER 60S. CHANCE OF PRECIPITATION
40 PERCENT.
MTZ324-221000-
MISSOURI HEADWATERS-
INCLUDING THE CITIES OF HARRISON, THREE FORKS, WILLOW CREEK,
PONY, AND WHITEHALL
747 PM MDT THU MAY 21 2026
REST OF TONIGHT
PARTLY CLOUDY UNTIL EARLY MORNING THEN
BECOMING MOSTLY CLOUDY. LOWS IN THE LOWER 30S. NORTH WINDS UP TO
5 MPH SHIFTING TO THE SOUTHWEST AFTER MIDNIGHT.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S. SOUTHWEST WINDS UP
TO 10 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY IN THE EVENING THEN BECOMING PARTLY
CLOUDY. LOWS IN THE UPPER 30S. NORTH WINDS UP TO 5 MPH SHIFTING
TO THE SOUTHWEST AFTER MIDNIGHT.
SATURDAY
SUNNY. HIGHS IN THE MID 70S. SOUTHWEST WINDS UP TO
10 MPH. GUSTS UP TO 25 MPH IN THE AFTERNOON.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 40S. WEST WINDS
UP TO 10 MPH.
SUNDAY AND SUNDAY NIGHT
PARTLY CLOUDY. HIGHS IN THE UPPER 70S.
LOWS IN THE UPPER 40S.
MEMORIAL DAY
SUNNY. HIGHS AROUND 80.
MONDAY NIGHT
MOSTLY CLOUDY WITH SLIGHT CHANCE OF THUNDERSTORMS
IN THE EVENING, THEN PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN
AFTER MIDNIGHT. LOWS IN THE UPPER 40S. CHANCE OF PRECIPITATION
20 PERCENT.
TUESDAY
MOSTLY SUNNY. A 50 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS IN THE LOWER 70S.
TUESDAY NIGHT
MOSTLY CLOUDY. RAIN SHOWERS LIKELY AND SLIGHT
CHANCE OF THUNDERSTORMS IN THE EVENING, THEN CHANCE OF RAIN AFTER
MIDNIGHT. LOWS IN THE MID 40S. CHANCE OF PRECIPITATION
60 PERCENT.
WEDNESDAY
PARTLY SUNNY. CHANCE OF RAIN IN THE MORNING, THEN
CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. HIGHS IN THE UPPER 60S. CHANCE OF PRECIPITATION
50 PERCENT.
WEDNESDAY NIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF RAIN IN
THE EVENING. LOWS IN THE MID 40S.
THURSDAY
MOSTLY SUNNY. SLIGHT CHANCE OF RAIN IN THE MORNING,
THEN SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS
AROUND 70. CHANCE OF PRECIPITATION 20 PERCENT.
MTZ325-221000-
MADISON RIVER VALLEY-
INCLUDING THE CITIES OF CAMERON, ENNIS, JEFFERS, MCALLISTER,
AND NORRIS
747 PM MDT THU MAY 21 2026
REST OF TONIGHT
PARTLY CLOUDY UNTIL EARLY MORNING THEN
BECOMING MOSTLY CLOUDY. LOWS IN THE LOWER 30S. NORTH WINDS UP TO
5 MPH WITH GUSTS TO AROUND 20 MPH SHIFTING TO THE SOUTH AFTER
MIDNIGHT.
FRIDAY
NOT AS COOL. MOSTLY SUNNY. HIGHS IN THE LOWER 60S.
SOUTH WINDS UP TO 5 MPH SHIFTING TO THE NORTH IN THE AFTERNOON.
FRIDAY NIGHT
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF RAIN
SHOWERS IN THE EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT. LOWS
IN THE UPPER 30S. SOUTHEAST WINDS UP TO 5 MPH SHIFTING TO THE
SOUTH AFTER MIDNIGHT.
SATURDAY
SUNNY. HIGHS IN THE LOWER 70S. SOUTH WINDS UP TO
10 MPH SHIFTING TO THE WEST IN THE AFTERNOON.
SATURDAY NIGHT
MOSTLY CLOUDY IN THE EVENING THEN BECOMING
PARTLY CLOUDY. LOWS IN THE MID 40S. SOUTHWEST WINDS 5 TO 10 MPH.
SUNDAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF RAIN SHOWERS IN
THE AFTERNOON. HIGHS IN THE UPPER 70S.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S.
MEMORIAL DAY
BREEZY, SUNNY. A 20 PERCENT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE UPPER 70S.
MONDAY NIGHT
BREEZY. MOSTLY CLOUDY IN THE EVENING THEN
BECOMING PARTLY CLOUDY. LOWS IN THE UPPER 40S.
TUESDAY
BREEZY. MOSTLY SUNNY. CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE
LOWER 70S. CHANCE OF PRECIPITATION 50 PERCENT.
TUESDAY NIGHT
MOSTLY CLOUDY. RAIN LIKELY IN THE EVENING, THEN
CHANCE OF RAIN AFTER MIDNIGHT. LOWS IN THE LOWER 40S. CHANCE OF
RAIN 60 PERCENT.
WEDNESDAY
PARTLY SUNNY. CHANCE OF RAIN IN THE MORNING, THEN
CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. HIGHS IN THE UPPER 60S. CHANCE OF PRECIPITATION
50 PERCENT.
WEDNESDAY NIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF RAIN IN
THE EVENING. LOWS IN THE LOWER 40S.
THURSDAY
MOSTLY SUNNY. SLIGHT CHANCE OF RAIN IN THE MORNING,
THEN CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS IN THE UPPER 60S. CHANCE OF PRECIPITATION
40 PERCENT.
MTZ326-221000-
GALLATIN VALLEY-
INCLUDING THE CITIES OF BOZEMAN AND GALLATIN GATEWAY
747 PM MDT THU MAY 21 2026
REST OF TONIGHT
MOSTLY CLEAR UNTIL EARLY MORNING THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE LOWER 30S. NORTH WINDS UP TO 5 MPH
SHIFTING TO THE SOUTH AFTER MIDNIGHT.
FRIDAY
NOT AS COOL. MOSTLY SUNNY. HIGHS IN THE MID 60S. SOUTH
WINDS UP TO 5 MPH SHIFTING TO THE NORTHWEST IN THE AFTERNOON.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 30S. NORTHEAST
WINDS UP TO 5 MPH SHIFTING TO THE SOUTHEAST AFTER MIDNIGHT.
SATURDAY
SUNNY. HIGHS IN THE LOWER 70S. SOUTH WINDS UP TO
5 MPH SHIFTING TO THE WEST IN THE AFTERNOON.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 40S. WEST WINDS
UP TO 10 MPH SHIFTING TO THE SOUTH AFTER MIDNIGHT.
SUNDAY
SUNNY. HIGHS IN THE UPPER 70S.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S.
MEMORIAL DAY
SUNNY. HIGHS IN THE LOWER 80S.
MONDAY NIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF RAIN IN THE
EVENING. LOWS IN THE UPPER 40S.
TUESDAY
MOSTLY SUNNY. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE MID 70S. CHANCE
OF PRECIPITATION 50 PERCENT.
TUESDAY NIGHT AND WEDNESDAY
MOSTLY CLOUDY. CHANCE OF RAIN
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE MID 40S.
HIGHS IN THE UPPER 60S. CHANCE OF PRECIPITATION 50 PERCENT.
WEDNESDAY NIGHT
PARTLY CLOUDY. CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING. LOWS IN THE LOWER
40S. CHANCE OF PRECIPITATION 30 PERCENT.
THURSDAY
MOSTLY SUNNY. SLIGHT CHANCE OF RAIN IN THE MORNING,
THEN CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS AROUND 70. CHANCE OF PRECIPITATION
40 PERCENT.
TEMPERATURE / PRECIPITATION
BOZEMAN AIRPORT 29 65 36 74 / 0 10 10 0
BOZEMAN MSU 32 63 38 72 / 0 10 10 0
MTZ330-221000-
GALLATIN AND MADISON COUNTY MOUNTAINS AND CENTENNIAL MOUNTAINS-
INCLUDING THE CITIES OF BIG SKY, WEST YELLOWSTONE, TARGHEE PASS,
AND RAYNOLDS PASS
747 PM MDT THU MAY 21 2026
REST OF TONIGHT
PARTLY CLOUDY. LOWS 23 TO 29. NORTH WINDS UP
TO 10 MPH. GUSTS UP TO 25 MPH IN THE EVENING.
FRIDAY
NOT AS COOL. MOSTLY SUNNY. A 20 PERCENT CHANCE OF RAIN
SHOWERS IN THE AFTERNOON. HIGHS 48 TO 58. SOUTHWEST WINDS UP TO
5 MPH SHIFTING TO THE WEST IN THE AFTERNOON.
FRIDAY NIGHT
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF RAIN
SHOWERS AND SNOW SHOWERS IN THE EVENING, THEN PARTLY CLOUDY AFTER
MIDNIGHT. LOWS 31 TO 37. SOUTHWEST WINDS UP TO 10 MPH.
SATURDAY
WARMER, SUNNY. HIGHS 56 TO 68. SOUTH WINDS UP TO
10 MPH SHIFTING TO THE SOUTHWEST WITH GUSTS TO AROUND 30 MPH IN
THE AFTERNOON.
SATURDAY NIGHT
MOSTLY CLOUDY IN THE EVENING THEN BECOMING
PARTLY CLOUDY. LOWS 38 TO 44. SOUTHWEST WINDS UP TO 10 MPH. GUSTS
UP TO 30 MPH IN THE EVENING.
SUNDAY AND SUNDAY NIGHT
PARTLY CLOUDY. HIGHS 61 TO 73. LOWS
40 TO 46.
MEMORIAL DAY
SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS 64 TO 74.
MONDAY NIGHT
PARTLY CLOUDY. LOWS 41 TO 47.
TUESDAY
MOSTLY SUNNY. SLIGHT CHANCE OF RAIN IN THE MORNING,
THEN CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS 58 TO 68. CHANCE OF PRECIPITATION
50 PERCENT.
TUESDAY NIGHT
MOSTLY CLOUDY WITH A 50 PERCENT CHANCE OF RAIN.
LOWS 36 TO 42.
WEDNESDAY
PARTLY SUNNY. CHANCE OF RAIN AND SNOW IN THE
MORNING, THEN CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS 53 TO 63. CHANCE OF
PRECIPITATION 50 PERCENT.
WEDNESDAY NIGHT
PARTLY CLOUDY WITH A 20 PERCENT CHANCE OF
RAIN. LOWS 35 TO 41.
THURSDAY
MOSTLY SUNNY. SLIGHT CHANCE OF RAIN AND SNOW IN THE
MORNING, THEN CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS 54 TO 64. CHANCE OF
PRECIPITATION 40 PERCENT.
TEMPERATURE / PRECIPITATION
WEST YELLOWSTONE 22 59 29 68 / 0 20 20 0
MTZ327-221000-
NORTHWEST BEAVERHEAD COUNTY-
INCLUDING THE CITIES OF DEWEY, WISDOM, WISE RIVER, BIG HOLE PASS,
AND CHIEF JOSEPH PASS
747 PM MDT THU MAY 21 2026
REST OF TONIGHT
PARTLY CLOUDY IN THE EVENING THEN BECOMING
MOSTLY CLOUDY. LOWS AROUND 30. NORTH WINDS UP TO 10 MPH WITH
GUSTS TO AROUND 25 MPH SHIFTING TO THE SOUTHEAST AFTER MIDNIGHT.
FRIDAY
NOT AS COOL. MOSTLY SUNNY. A 20 PERCENT CHANCE OF RAIN
SHOWERS IN THE AFTERNOON. HIGHS 52 TO 62. SOUTHWEST WINDS UP TO
5 MPH SHIFTING TO THE NORTHWEST IN THE AFTERNOON.
FRIDAY NIGHT
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF RAIN
SHOWERS IN THE EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT. LOWS
IN THE MID 30S. NORTHWEST WINDS UP TO 10 MPH SHIFTING TO THE
SOUTHWEST AFTER MIDNIGHT.
SATURDAY
WARMER. MOSTLY SUNNY. HIGHS 58 TO 70. SOUTHWEST WINDS
UP TO 5 MPH SHIFTING TO THE WEST 5 TO 15 MPH IN THE AFTERNOON.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 30S. WEST
WINDS 5 TO 10 MPH WITH GUSTS TO AROUND 30 MPH SHIFTING TO THE
SOUTHWEST WITH GUSTS TO AROUND 20 MPH AFTER MIDNIGHT.
SUNDAY
MOSTLY SUNNY. HIGHS 62 TO 72.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 40S.
MEMORIAL DAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS 63 TO 73.
MONDAY NIGHT
MOSTLY CLOUDY IN THE EVENING THEN BECOMING PARTLY
CLOUDY. A 20 PERCENT CHANCE OF RAIN. LOWS 38 TO 44.
TUESDAY
PARTLY SUNNY. CHANCE OF RAIN IN THE MORNING, THEN RAIN
SHOWERS LIKELY AND SLIGHT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. HIGHS 54 TO 64. CHANCE OF PRECIPITATION 70 PERCENT.
TUESDAY NIGHT
MOSTLY CLOUDY. RAIN SHOWERS LIKELY AND SLIGHT
CHANCE OF THUNDERSTORMS IN THE EVENING, THEN CHANCE OF RAIN AND
SNOW AFTER MIDNIGHT. LOWS IN THE MID 30S. CHANCE OF PRECIPITATION
60 PERCENT.
WEDNESDAY
PARTLY SUNNY. CHANCE OF RAIN AND SNOW IN THE
MORNING, THEN CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS 52 TO 62. CHANCE OF
PRECIPITATION 50 PERCENT.
WEDNESDAY NIGHT
PARTLY CLOUDY. CHANCE OF RAIN IN THE EVENING,
THEN SLIGHT CHANCE OF RAIN AFTER MIDNIGHT. LOWS IN THE MID 30S.
CHANCE OF RAIN 30 PERCENT.
THURSDAY
MOSTLY SUNNY. SLIGHT CHANCE OF RAIN IN THE MORNING,
THEN CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS 53 TO 63. CHANCE OF PRECIPITATION
40 PERCENT.
MTZ328-221000-
BEAVERHEAD AND WESTERN MADISON BELOW 6000FT-
INCLUDING THE CITIES OF BANNACK, DILLON, GLEN, AND WATERLOO
747 PM MDT THU MAY 21 2026
REST OF TONIGHT
PARTLY CLOUDY IN THE EVENING THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE LOWER 30S. NORTHEAST WINDS UP TO
10 MPH SHIFTING TO THE SOUTHEAST AFTER MIDNIGHT.
FRIDAY
WARMER. MOSTLY SUNNY. HIGHS 60 TO 66. SOUTH WINDS UP TO
5 MPH SHIFTING TO THE WEST IN THE AFTERNOON.
FRIDAY NIGHT
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF RAIN
SHOWERS IN THE EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT. LOWS
IN THE UPPER 30S. NORTH WINDS UP TO 10 MPH SHIFTING TO THE
SOUTHWEST AFTER MIDNIGHT.
SATURDAY
WARMER. MOSTLY SUNNY. HIGHS 69 TO 77. SOUTH WINDS UP
TO 5 MPH SHIFTING TO THE WEST 5 TO 15 MPH IN THE AFTERNOON.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 40S. SOUTHWEST
WINDS UP TO 10 MPH. GUSTS UP TO 25 MPH IN THE EVENING.
SUNDAY AND SUNDAY NIGHT
PARTLY CLOUDY. HIGHS 73 TO 79. LOWS IN
THE MID 40S.
MEMORIAL DAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS 74 TO 80.
MONDAY NIGHT
MOSTLY CLOUDY IN THE EVENING THEN BECOMING PARTLY
CLOUDY. A 20 PERCENT CHANCE OF RAIN. LOWS IN THE MID 40S.
TUESDAY
PARTLY SUNNY. SLIGHT CHANCE OF RAIN IN THE MORNING,
THEN CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS 66 TO 72. CHANCE OF PRECIPITATION
50 PERCENT.
TUESDAY NIGHT
MOSTLY CLOUDY WITH A 50 PERCENT CHANCE OF RAIN.
LOWS IN THE LOWER 40S.
WEDNESDAY
PARTLY SUNNY. CHANCE OF RAIN IN THE MORNING, THEN
CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. HIGHS 63 TO 69. CHANCE OF PRECIPITATION 40 PERCENT.
WEDNESDAY NIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF RAIN IN
THE EVENING. LOWS IN THE LOWER 40S.
THURSDAY
MOSTLY SUNNY. SLIGHT CHANCE OF RAIN IN THE MORNING,
THEN SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS 64 TO
70. CHANCE OF PRECIPITATION 20 PERCENT.
TEMPERATURE / PRECIPITATION
DILLON 31 65 37 76 / 0 10 20 0
MTZ329-221000-
RUBY MOUNTAINS AND SOUTHERN BEAVERHEAD MOUNTAINS-
INCLUDING THE CITY OF MONIDA PASS
747 PM MDT THU MAY 21 2026
REST OF TONIGHT
MOSTLY CLEAR THEN BECOMING MOSTLY CLOUDY AFTER
MIDNIGHT THEN BECOMING PARTLY CLOUDY. LOWS IN THE UPPER 20S.
NORTH WINDS UP TO 10 MPH WITH GUSTS TO AROUND 30 MPH SHIFTING TO
THE SOUTHEAST WITH GUSTS TO AROUND 20 MPH AFTER MIDNIGHT.
FRIDAY
NOT AS COOL. MOSTLY SUNNY. A 20 PERCENT CHANCE OF RAIN
SHOWERS IN THE AFTERNOON. HIGHS 52 TO 60. SOUTH WINDS UP TO
10 MPH SHIFTING TO THE WEST IN THE AFTERNOON. GUSTS UP TO 25 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF RAIN
SHOWERS AND SNOW SHOWERS IN THE EVENING, THEN PARTLY CLOUDY AFTER
MIDNIGHT. LOWS IN THE MID 30S. SOUTHWEST WINDS UP TO 10 MPH.
GUSTS UP TO 25 MPH IN THE EVENING.
SATURDAY
WARMER. MOSTLY SUNNY. HIGHS 62 TO 70. SOUTH WINDS UP
TO 5 MPH INCREASING TO WEST 10 TO 15 MPH WITH GUSTS TO AROUND
35 MPH IN THE AFTERNOON.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 40S. WEST
WINDS 10 TO 15 MPH WITH GUSTS TO AROUND 35 MPH SHIFTING TO THE
SOUTHWEST AFTER MIDNIGHT.
SUNDAY AND SUNDAY NIGHT
PARTLY CLOUDY. HIGHS 65 TO 73. LOWS IN
THE LOWER 40S.
MEMORIAL DAY
WINDY, SUNNY. A 20 PERCENT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS 66 TO 74.
MONDAY NIGHT
WINDY. PARTLY CLOUDY. A 20 PERCENT CHANCE OF RAIN
IN THE EVENING. LOWS IN THE MID 40S.
TUESDAY
WINDY. MOSTLY SUNNY. SLIGHT CHANCE OF RAIN IN THE
MORNING, THEN CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS 58 TO 66. CHANCE OF
PRECIPITATION 50 PERCENT.
TUESDAY NIGHT
MOSTLY CLOUDY WITH A 50 PERCENT CHANCE OF RAIN.
LOWS IN THE UPPER 30S.
WEDNESDAY
PARTLY SUNNY. CHANCE OF RAIN IN THE MORNING, THEN
CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. HIGHS 54 TO 62. CHANCE OF PRECIPITATION 40 PERCENT.
WEDNESDAY NIGHT
PARTLY CLOUDY WITH A 20 PERCENT CHANCE OF
RAIN. LOWS IN THE UPPER 30S.
THURSDAY
MOSTLY SUNNY. SLIGHT CHANCE OF RAIN IN THE MORNING,
THEN SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS 56 TO
64. CHANCE OF PRECIPITATION 20 PERCENT.
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