867
FPUS55 KTFX 172137
ZFPTFX
ZONE FORECAST PRODUCT FOR CENTRAL AND SOUTHWEST MONTANA
NATIONAL WEATHER SERVICE GREAT FALLS MT
337 PM MDT MON AUG 17 2026
SPOT TEMPERATURES AND PROBABILITIES OF MEASURABLE PRECIPITATION
ARE FOR TONIGHT, TUESDAY, TUESDAY NIGHT, AND WEDNESDAY.
MTZ301-181000-
EAST GLACIER PARK REGION-
INCLUDING THE CITIES OF EAST GLACIER PARK, KIOWA, BABB,
SAINT MARY, MARIAS PASS, AND LOGAN PASS
337 PM MDT MON AUG 17 2026
TONIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE EVENING. PATCHY SMOKE THROUGH THE NIGHT. LOWS AROUND 50. WEST
WINDS UP TO 10 MPH.
TUESDAY
MOSTLY SUNNY. PATCHY SMOKE THROUGH THE DAY. A
20 PERCENT CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS 62 TO
72. WEST WINDS 5 TO 15 MPH.
TUESDAY NIGHT
PARTLY CLOUDY. PATCHY SMOKE. LOWS IN THE LOWER
50S. SOUTHWEST WINDS 5 TO 15 MPH.
WEDNESDAY
SUNNY. PATCHY SMOKE IN THE MORNING. HIGHS 64 TO 74.
WEST WINDS 5 TO 15 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S.
SOUTHWEST WINDS 5 TO 15 MPH.
THURSDAY AND THURSDAY NIGHT
MOSTLY CLEAR. HIGHS 64 TO 72. LOWS
IN THE LOWER 50S.
FRIDAY
MOSTLY SUNNY. HIGHS 68 TO 76.
FRIDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN MOSTLY CLOUDY
WITH A 20 PERCENT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. LOWS IN
THE MID 50S.
SATURDAY
PARTLY SUNNY. CHANCE OF RAIN SHOWERS IN THE MORNING,
THEN CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS 65 TO 75. CHANCE OF PRECIPITATION
40 PERCENT.
SATURDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
WITH SLIGHT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. LOWS IN THE
LOWER 50S. CHANCE OF PRECIPITATION 40 PERCENT.
SUNDAY
SUNNY WITH A 20 PERCENT CHANCE OF RAIN SHOWERS. HIGHS
57 TO 67.
SUNDAY NIGHT AND MONDAY
MOSTLY CLEAR. LOWS IN THE UPPER 40S.
HIGHS 60 TO 70.
MTZ307-181000-
SOUTHERN ROCKY MOUNTAIN FRONT-
INCLUDING THE CITY OF ROGERS PASS
337 PM MDT MON AUG 17 2026
TONIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE EVENING. PATCHY SMOKE IN THE LATE EVENING AND OVERNIGHT. LOWS
46 TO 52. WEST WINDS UP TO 10 MPH. GUSTS UP TO 25 MPH IN THE
EVENING.
TUESDAY
MOSTLY SUNNY. PATCHY SMOKE THROUGH THE DAY. A
20 PERCENT CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS 64 TO
74. WEST WINDS UP TO 15 MPH.
TUESDAY NIGHT
PARTLY CLOUDY. PATCHY SMOKE. LOWS 46 TO 52. WEST
WINDS 5 TO 10 MPH WITH GUSTS TO AROUND 25 MPH.
WEDNESDAY
SUNNY. HIGHS 66 TO 76. WEST WINDS 5 TO 15 MPH.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS 47 TO 53. WEST WINDS UP TO
10 MPH.
THURSDAY AND THURSDAY NIGHT
MOSTLY CLEAR. HIGHS 67 TO 77. LOWS
48 TO 54.
FRIDAY
MOSTLY SUNNY. HIGHS 70 TO 80.
FRIDAY NIGHT
MOSTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS IN
THE EVENING, THEN SLIGHT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT.
LOWS 52 TO 58. CHANCE OF PRECIPITATION 20 PERCENT.
SATURDAY
MOSTLY SUNNY. A 40 PERCENT CHANCE OF RAIN SHOWERS IN
THE AFTERNOON. HIGHS 68 TO 78.
SATURDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
AFTER MIDNIGHT. LOWS 47 TO 53. CHANCE OF PRECIPITATION
40 PERCENT.
SUNDAY THROUGH MONDAY
MOSTLY CLEAR. HIGHS 61 TO 74. LOWS 45 TO
51.
MTZ302-181000-
NORTHERN HIGH PLAINS-
INCLUDING THE CITIES OF BROWNING, HEART BUTTE, AND DUPUYER
337 PM MDT MON AUG 17 2026
TONIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE EVENING. PATCHY SMOKE THROUGH THE NIGHT. LOWS AROUND 50. WEST
WINDS UP TO 10 MPH. GUSTS UP TO 20 MPH IN THE EVENING.
TUESDAY
MOSTLY SUNNY. PATCHY SMOKE THROUGH THE DAY. A
20 PERCENT CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE
MID 70S. WEST WINDS UP TO 10 MPH INCREASING TO 10 TO 15 MPH IN
THE AFTERNOON.
TUESDAY NIGHT
MOSTLY CLEAR. PATCHY SMOKE. LOWS IN THE LOWER
50S. WEST WINDS 5 TO 15 MPH.
WEDNESDAY
SUNNY. PATCHY SMOKE IN THE MORNING. HIGHS IN THE
UPPER 70S. WEST WINDS 5 TO 15 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. WEST
WINDS 5 TO 10 MPH. GUSTS UP TO 25 MPH IN THE EVENING.
THURSDAY AND THURSDAY NIGHT
MOSTLY CLEAR. HIGHS IN THE MID
70S. LOWS IN THE LOWER 50S.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 70S.
FRIDAY NIGHT AND SATURDAY
MOSTLY CLOUDY. A 20 PERCENT CHANCE
OF RAIN SHOWERS. LOWS IN THE MID 50S. HIGHS IN THE UPPER 70S.
SATURDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
WITH SLIGHT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. LOWS IN THE
LOWER 50S. CHANCE OF PRECIPITATION 30 PERCENT.
SUNDAY
SUNNY. A 20 PERCENT CHANCE OF RAIN SHOWERS IN THE
MORNING. HIGHS IN THE LOWER 70S.
SUNDAY NIGHT AND MONDAY
MOSTLY CLEAR. LOWS IN THE UPPER 40S.
HIGHS IN THE LOWER 70S.
MTZ308-181000-
SOUTHERN HIGH PLAINS-
INCLUDING THE CITIES OF BYNUM, CHOTEAU, AND PENDROY
337 PM MDT MON AUG 17 2026
TONIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE EVENING. PATCHY SMOKE THROUGH THE NIGHT. LOWS IN THE LOWER
50S. NORTHWEST WINDS UP TO 5 MPH WITH GUSTS TO AROUND 20 MPH
SHIFTING TO THE WEST AFTER MIDNIGHT.
TUESDAY
MOSTLY SUNNY. PATCHY SMOKE THROUGH THE DAY. A
20 PERCENT CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE
UPPER 70S. WEST WINDS UP TO 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING THEN CLEARING.
PATCHY SMOKE THROUGH THE NIGHT. LOWS IN THE LOWER 50S. WEST WINDS
5 TO 10 MPH.
WEDNESDAY
SUNNY. HIGHS IN THE LOWER 80S. WEST WINDS 5 TO
10 MPH WITH GUSTS TO AROUND 25 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. WEST WINDS
UP TO 10 MPH.
THURSDAY AND THURSDAY NIGHT
MOSTLY CLEAR. HIGHS AROUND 80.
LOWS IN THE MID 50S.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S.
FRIDAY NIGHT
PARTLY CLOUDY IN THE EVENING THEN BECOMING MOSTLY
CLOUDY. A 20 PERCENT CHANCE OF RAIN SHOWERS. LOWS IN THE UPPER
50S.
SATURDAY
PARTLY SUNNY. A 40 PERCENT CHANCE OF RAIN SHOWERS IN
THE AFTERNOON. HIGHS IN THE LOWER 80S.
SATURDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
WITH SLIGHT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. LOWS IN THE
MID 50S. CHANCE OF PRECIPITATION 30 PERCENT.
SUNDAY
SUNNY. A 20 PERCENT CHANCE OF RAIN SHOWERS IN THE
AFTERNOON. HIGHS IN THE UPPER 70S.
SUNDAY NIGHT AND MONDAY
MOSTLY CLEAR. LOWS IN THE LOWER 50S.
HIGHS IN THE UPPER 70S.
MTZ303-181000-
EASTERN GLACIER, WESTERN TOOLE, AND CENTRAL PONDERA-
INCLUDING THE CITIES OF CUT BANK, ETHRIDGE, AND SANTA RITA
337 PM MDT MON AUG 17 2026
TONIGHT
MOSTLY CLOUDY EARLY IN THE EVENING THEN BECOMING
PARTLY CLOUDY. CHANCE OF THUNDERSTORMS EARLY IN THE EVENING, THEN
SLIGHT CHANCE OF THUNDERSTORMS LATE IN THE EVENING. PATCHY SMOKE
THROUGH THE NIGHT. LOWS AROUND 50. NORTHWEST WINDS UP TO 10 MPH
SHIFTING TO THE WEST AFTER MIDNIGHT. CHANCE OF THUNDERSTORMS
50 PERCENT.
TUESDAY
MOSTLY SUNNY. PATCHY SMOKE THROUGH THE DAY. A
20 PERCENT CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE
UPPER 70S. WEST WINDS UP TO 5 MPH INCREASING TO 5 TO 15 MPH IN
THE AFTERNOON.
TUESDAY NIGHT
MOSTLY CLEAR. A 20 PERCENT CHANCE OF
THUNDERSTORMS IN THE EVENING. PATCHY SMOKE THROUGH THE NIGHT.
LOWS IN THE LOWER 50S. WEST WINDS 5 TO 10 MPH WITH GUSTS TO
AROUND 25 MPH.
WEDNESDAY
SUNNY. PATCHY SMOKE IN THE MORNING. HIGHS IN THE
LOWER 80S. WEST WINDS 5 TO 15 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. WEST
WINDS 5 TO 10 MPH. GUSTS UP TO 25 MPH IN THE EVENING.
THURSDAY AND THURSDAY NIGHT
MOSTLY CLEAR. HIGHS IN THE UPPER
70S. LOWS IN THE LOWER 50S.
FRIDAY
MOSTLY SUNNY. HIGHS AROUND 80.
FRIDAY NIGHT AND SATURDAY
MOSTLY CLOUDY. A 20 PERCENT CHANCE
OF RAIN SHOWERS. LOWS IN THE MID 50S. HIGHS AROUND 80.
SATURDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
WITH SLIGHT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. LOWS IN THE
MID 50S. CHANCE OF PRECIPITATION 40 PERCENT.
SUNDAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF RAIN SHOWERS IN
THE AFTERNOON. HIGHS IN THE MID 70S.
SUNDAY NIGHT AND MONDAY
MOSTLY CLEAR. LOWS IN THE LOWER 50S.
HIGHS IN THE MID 70S.
TEMPERATURE / PRECIPITATION
CUT BANK 48 77 51 82 / 50 20 10 0
MTZ304-181000-
EASTERN TOOLE AND LIBERTY-
INCLUDING THE CITIES OF DEVON, SHELBY, CHESTER, GALATA, JOPLIN,
LOTHAIR, AND WHITLASH
337 PM MDT MON AUG 17 2026
TONIGHT
MOSTLY CLOUDY WITH CHANCE OF THUNDERSTORMS EARLY IN
THE EVENING, THEN PARTLY CLOUDY WITH SLIGHT CHANCE OF
THUNDERSTORMS IN THE LATE EVENING AND EARLY MORNING. PARTLY
CLOUDY LATE IN THE NIGHT. PATCHY SMOKE THROUGH THE NIGHT. LOWS IN
THE LOWER 50S. NORTH WINDS UP TO 10 MPH. CHANCE OF THUNDERSTORMS
50 PERCENT.
TUESDAY
MOSTLY SUNNY. PATCHY SMOKE THROUGH THE DAY. A
20 PERCENT CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE
UPPER 70S. SOUTHEAST WINDS UP TO 5 MPH SHIFTING TO THE WEST IN
THE AFTERNOON.
TUESDAY NIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF
THUNDERSTORMS IN THE EVENING. PATCHY SMOKE THROUGH THE NIGHT.
LOWS IN THE MID 50S. WEST WINDS UP TO 10 MPH.
WEDNESDAY
SUNNY. PATCHY SMOKE IN THE MORNING. HIGHS 80 TO 86.
WEST WINDS UP TO 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. NORTHWEST
WINDS UP TO 10 MPH SHIFTING TO THE SOUTHWEST AFTER MIDNIGHT.
THURSDAY AND THURSDAY NIGHT
MOSTLY CLEAR. HIGHS 76 TO 82. LOWS
IN THE MID 50S.
FRIDAY AND FRIDAY NIGHT
PARTLY CLOUDY. HIGHS IN THE LOWER 80S.
LOWS IN THE UPPER 50S.
SATURDAY
MOSTLY CLOUDY IN THE MORNING THEN BECOMING MOSTLY
SUNNY. A 20 PERCENT CHANCE OF RAIN SHOWERS. HIGHS 80 TO 86.
SATURDAY NIGHT
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN CHANCE OF
RAIN SHOWERS AFTER MIDNIGHT. LOWS IN THE UPPER 50S. CHANCE OF
PRECIPITATION 40 PERCENT.
SUNDAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF RAIN SHOWERS IN
THE AFTERNOON. HIGHS 76 TO 82.
SUNDAY NIGHT AND MONDAY
MOSTLY CLEAR. LOWS IN THE LOWER 50S.
HIGHS 75 TO 81.
MTZ305-181000-
HILL COUNTY-
INCLUDING THE CITY OF HAVRE
337 PM MDT MON AUG 17 2026
TONIGHT
MOSTLY CLOUDY EARLY IN THE EVENING THEN BECOMING
PARTLY CLOUDY. A 20 PERCENT CHANCE OF THUNDERSTORMS UNTIL EARLY
MORNING. PATCHY SMOKE UNTIL EARLY MORNING. PATCHY FOG LATE IN THE
NIGHT. LOWS IN THE LOWER 50S. NORTH WINDS UP TO 10 MPH.
TUESDAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. PATCHY SMOKE IN THE AFTERNOON. HIGHS IN THE LOWER
80S. EAST WINDS UP TO 5 MPH SHIFTING TO THE SOUTHWEST IN THE
AFTERNOON.
TUESDAY NIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF
THUNDERSTORMS IN THE EVENING. PATCHY SMOKE THROUGH THE NIGHT.
LOWS IN THE LOWER 50S. WEST WINDS UP TO 10 MPH.
WEDNESDAY
SUNNY. PATCHY SMOKE IN THE MORNING. HIGHS IN THE MID
80S. WEST WINDS 5 TO 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. NORTHWEST
WINDS UP TO 10 MPH SHIFTING TO THE EAST AFTER MIDNIGHT.
THURSDAY THROUGH FRIDAY
MOSTLY CLEAR. HIGHS IN THE LOWER 80S.
LOWS IN THE MID 50S.
FRIDAY NIGHT
PARTLY CLOUDY IN THE EVENING THEN BECOMING MOSTLY
CLOUDY. LOWS IN THE UPPER 50S.
SATURDAY
PARTLY SUNNY WITH A 20 PERCENT CHANCE OF RAIN
SHOWERS. HIGHS IN THE MID 80S.
SATURDAY NIGHT
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN CHANCE OF
RAIN SHOWERS AFTER MIDNIGHT. LOWS IN THE UPPER 50S. CHANCE OF
PRECIPITATION 40 PERCENT.
SUNDAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF RAIN SHOWERS IN
THE AFTERNOON. HIGHS IN THE LOWER 80S.
SUNDAY NIGHT AND MONDAY
MOSTLY CLEAR. LOWS IN THE LOWER 50S.
HIGHS IN THE LOWER 80S.
TEMPERATURE / PRECIPITATION
HAVRE 51 84 54 86 / 30 20 20 0
MTZ306-181000-
NORTHERN BLAINE COUNTY-
INCLUDING THE CITIES OF CHINOOK, ZURICH, HARLEM, HOGELAND,
AND FORT BELKNAP
337 PM MDT MON AUG 17 2026
TONIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF THUNDERSTORMS
UNTIL EARLY MORNING. PATCHY SMOKE IN THE EVENING. PATCHY FOG LATE
IN THE NIGHT. LOWS AROUND 50. NORTHEAST WINDS UP TO 10 MPH.
TUESDAY
MOSTLY SUNNY. PATCHY FOG IN THE MORNING. PATCHY SMOKE
IN THE AFTERNOON. A 20 PERCENT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. HIGHS IN THE LOWER 80S. EAST WINDS UP TO 5 MPH
SHIFTING TO THE SOUTH IN THE AFTERNOON.
TUESDAY NIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF
THUNDERSTORMS IN THE EVENING. PATCHY SMOKE THROUGH THE NIGHT.
LOWS IN THE LOWER 50S. SOUTH WINDS UP TO 10 MPH.
WEDNESDAY
SUNNY. PATCHY SMOKE IN THE MORNING. HIGHS IN THE MID
80S. WEST WINDS UP TO 10 MPH INCREASING TO 10 TO 15 MPH IN THE
AFTERNOON.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. NORTHWEST
WINDS 5 TO 10 MPH SHIFTING TO THE NORTHEAST AFTER MIDNIGHT.
THURSDAY THROUGH FRIDAY
MOSTLY CLEAR. HIGHS IN THE LOWER 80S.
LOWS IN THE LOWER 50S.
FRIDAY NIGHT
PARTLY CLOUDY IN THE EVENING THEN BECOMING MOSTLY
CLOUDY. LOWS IN THE UPPER 50S.
SATURDAY
BREEZY. PARTLY SUNNY. A 20 PERCENT CHANCE OF RAIN
SHOWERS IN THE AFTERNOON. HIGHS IN THE MID 80S.
SATURDAY NIGHT
BREEZY. MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS
AND SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN CHANCE OF
RAIN SHOWERS AFTER MIDNIGHT. LOWS IN THE UPPER 50S. CHANCE OF
PRECIPITATION 40 PERCENT.
SUNDAY AND SUNDAY NIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF
RAIN SHOWERS. HIGHS IN THE LOWER 80S. LOWS IN THE MID 50S.
MONDAY
SUNNY. HIGHS IN THE LOWER 80S.
MTZ309-181000-
EASTERN PONDERA AND EASTERN TETON-
INCLUDING THE CITIES OF BRADY, CONRAD, AND LEDGER
337 PM MDT MON AUG 17 2026
TONIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE EVENING. PATCHY SMOKE THROUGH THE NIGHT. LOWS AROUND 50.
NORTH WINDS UP TO 5 MPH SHIFTING TO THE WEST AFTER MIDNIGHT.
TUESDAY
MOSTLY SUNNY. PATCHY SMOKE THROUGH THE DAY. A
20 PERCENT CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE
LOWER 80S. WEST WINDS UP TO 10 MPH.
TUESDAY NIGHT
MOSTLY CLEAR. PATCHY SMOKE. LOWS IN THE LOWER
50S. WEST WINDS 5 TO 10 MPH.
WEDNESDAY
SUNNY. PATCHY SMOKE IN THE MORNING. HIGHS IN THE MID
80S. WEST WINDS 5 TO 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. WEST
WINDS UP TO 10 MPH.
THURSDAY AND THURSDAY NIGHT
MOSTLY CLEAR. HIGHS IN THE LOWER
80S. LOWS IN THE LOWER 50S.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S.
FRIDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN MOSTLY CLOUDY
WITH A 20 PERCENT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. LOWS IN
THE UPPER 50S.
SATURDAY
PARTLY SUNNY. SLIGHT CHANCE OF RAIN SHOWERS IN THE
MORNING, THEN CHANCE OF RAIN SHOWERS IN THE AFTERNOON. HIGHS IN
THE MID 80S. CHANCE OF SHOWERS 30 PERCENT.
SATURDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
WITH SLIGHT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. LOWS IN THE
MID 50S. CHANCE OF PRECIPITATION 40 PERCENT.
SUNDAY
SUNNY. A 20 PERCENT CHANCE OF RAIN SHOWERS IN THE
AFTERNOON. HIGHS AROUND 80.
SUNDAY NIGHT AND MONDAY
MOSTLY CLEAR. LOWS IN THE LOWER 50S.
HIGHS AROUND 80.
MTZ310-181000-
WESTERN AND CENTRAL CHOUTEAU COUNTY-
INCLUDING THE CITIES OF FLOWEREE, CARTER, AND FORT BENTON
337 PM MDT MON AUG 17 2026
TONIGHT
PARTLY CLOUDY WITH A 20 PERCENT CHANCE OF
THUNDERSTORMS UNTIL EARLY MORNING, THEN PARTLY CLOUDY LATE IN THE
NIGHT. PATCHY SMOKE THROUGH THE NIGHT. LOWS IN THE LOWER 50S.
NORTH WINDS UP TO 10 MPH SHIFTING TO THE SOUTHWEST AFTER
MIDNIGHT.
TUESDAY
MOSTLY SUNNY. PATCHY SMOKE THROUGH THE DAY. A
20 PERCENT CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE
LOWER 80S. SOUTHWEST WINDS UP TO 5 MPH SHIFTING TO THE WEST IN
THE AFTERNOON.
TUESDAY NIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF
THUNDERSTORMS IN THE EVENING. PATCHY SMOKE THROUGH THE NIGHT.
LOWS IN THE MID 50S. SOUTHWEST WINDS UP TO 10 MPH.
WEDNESDAY
SUNNY. PATCHY SMOKE IN THE MORNING. HIGHS IN THE MID
80S. WEST WINDS 5 TO 15 MPH.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 50S. NORTHWEST
WINDS UP TO 10 MPH SHIFTING TO THE SOUTHWEST AFTER MIDNIGHT.
THURSDAY AND THURSDAY NIGHT
MOSTLY CLEAR. HIGHS IN THE MID
80S. LOWS IN THE MID 50S.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE MID 80S.
FRIDAY NIGHT
PARTLY CLOUDY IN THE EVENING THEN BECOMING MOSTLY
CLOUDY. A 20 PERCENT CHANCE OF RAIN SHOWERS. LOWS AROUND 60.
SATURDAY
MOSTLY SUNNY WITH A 20 PERCENT CHANCE OF RAIN
SHOWERS. HIGHS IN THE UPPER 80S.
SATURDAY NIGHT
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN CHANCE OF
RAIN SHOWERS AFTER MIDNIGHT. LOWS IN THE UPPER 50S. CHANCE OF
PRECIPITATION 40 PERCENT.
SUNDAY AND SUNDAY NIGHT
MOSTLY CLEAR. A 20 PERCENT CHANCE OF
RAIN SHOWERS. HIGHS IN THE LOWER 80S. LOWS IN THE MID 50S.
MONDAY
SUNNY. HIGHS IN THE LOWER 80S.
MTZ311-181000-
BEARS PAW MOUNTAINS AND SOUTHERN BLAINE-
INCLUDING THE CITY OF ROCKY BOY
337 PM MDT MON AUG 17 2026
TONIGHT
PARTLY CLOUDY WITH A 20 PERCENT CHANCE OF
THUNDERSTORMS UNTIL EARLY MORNING, THEN PARTLY CLOUDY LATE IN THE
NIGHT. PATCHY SMOKE THROUGH THE NIGHT. LOWS IN THE MID 50S. NORTH
WINDS UP TO 10 MPH SHIFTING TO THE SOUTHWEST AFTER MIDNIGHT.
TUESDAY
MOSTLY SUNNY. PATCHY SMOKE THROUGH THE DAY. A
20 PERCENT CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS 77 TO
83. SOUTHEAST WINDS UP TO 5 MPH SHIFTING TO THE WEST IN THE
AFTERNOON.
TUESDAY NIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF
THUNDERSTORMS IN THE EVENING. PATCHY SMOKE THROUGH THE NIGHT.
LOWS IN THE MID 50S. SOUTHWEST WINDS UP TO 10 MPH.
WEDNESDAY
SUNNY. PATCHY SMOKE IN THE MORNING. HIGHS 81 TO 87.
WEST WINDS UP TO 15 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 50S.
NORTHWEST WINDS UP TO 10 MPH SHIFTING TO THE SOUTHWEST AFTER
MIDNIGHT.
THURSDAY THROUGH FRIDAY
MOSTLY CLEAR. HIGHS 80 TO 86. LOWS IN
THE UPPER 50S.
FRIDAY NIGHT
PARTLY CLOUDY IN THE EVENING THEN BECOMING MOSTLY
CLOUDY. LOWS IN THE LOWER 60S.
SATURDAY
PARTLY SUNNY WITH A 20 PERCENT CHANCE OF RAIN
SHOWERS. HIGHS 81 TO 87.
SATURDAY NIGHT
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN CHANCE OF
RAIN SHOWERS AFTER MIDNIGHT. LOWS IN THE LOWER 60S. CHANCE OF
PRECIPITATION 40 PERCENT.
SUNDAY AND SUNDAY NIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF
RAIN SHOWERS. HIGHS 79 TO 85. LOWS IN THE UPPER 50S.
MONDAY
SUNNY. HIGHS 78 TO 84.
MTZ312-181000-
CASCADE COUNTY BELOW 5000FT-
INCLUDING THE CITY OF GREAT FALLS
337 PM MDT MON AUG 17 2026
TONIGHT
MOSTLY CLOUDY EARLY IN THE EVENING THEN BECOMING
PARTLY CLOUDY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN THE
EVENING. PATCHY SMOKE IN THE LATE EVENING AND OVERNIGHT. LOWS IN
THE LOWER 50S. NORTHEAST WINDS UP TO 10 MPH SHIFTING TO THE
SOUTHWEST AFTER MIDNIGHT.
TUESDAY
MOSTLY SUNNY. PATCHY SMOKE THROUGH THE DAY. A
20 PERCENT CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE
LOWER 80S. WEST WINDS UP TO 10 MPH.
TUESDAY NIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF
THUNDERSTORMS IN THE EVENING. PATCHY SMOKE THROUGH THE NIGHT.
LOWS IN THE MID 50S. SOUTHWEST WINDS UP TO 10 MPH.
WEDNESDAY
SUNNY. HIGHS IN THE MID 80S. SOUTHWEST WINDS 5 TO
15 MPH.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 50S. WEST WINDS
UP TO 10 MPH SHIFTING TO THE SOUTH AFTER MIDNIGHT.
THURSDAY AND THURSDAY NIGHT
MOSTLY CLEAR. HIGHS IN THE LOWER
80S. LOWS IN THE MID 50S.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE MID 80S.
FRIDAY NIGHT
PARTLY CLOUDY IN THE EVENING THEN BECOMING MOSTLY
CLOUDY. A 20 PERCENT CHANCE OF RAIN SHOWERS. LOWS IN THE UPPER
50S.
SATURDAY AND SATURDAY NIGHT
MOSTLY CLOUDY. A 40 PERCENT CHANCE
OF RAIN SHOWERS. HIGHS IN THE UPPER 80S. LOWS IN THE UPPER 50S.
SUNDAY
SUNNY. A 20 PERCENT CHANCE OF RAIN SHOWERS IN THE
AFTERNOON. HIGHS IN THE LOWER 80S.
SUNDAY NIGHT AND MONDAY
MOSTLY CLEAR. LOWS IN THE MID 50S.
HIGHS IN THE LOWER 80S.
TEMPERATURE / PRECIPITATION
GREAT FALLS ARPT 52 83 53 86 / 20 20 10 0
MTZ313-181000-
JUDITH BASIN COUNTY AND JUDITH GAP-
INCLUDING THE CITIES OF RAYNESFORD, GEYSER, STANFORD, WINDHAM,
BENCHLAND, HOBSON, AND MOCCASIN
337 PM MDT MON AUG 17 2026
TONIGHT
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF
THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT.
PATCHY SMOKE IN THE LATE EVENING AND OVERNIGHT. LOWS IN THE LOWER
50S. NORTHWEST WINDS UP TO 10 MPH SHIFTING TO THE SOUTHWEST AFTER
MIDNIGHT.
TUESDAY
MOSTLY SUNNY. SLIGHT CHANCE OF RAIN SHOWERS IN THE
MORNING, THEN CHANCE OF THUNDERSTORMS IN THE AFTERNOON. PATCHY
SMOKE THROUGH THE DAY. HIGHS IN THE UPPER 70S. SOUTHWEST WINDS UP
TO 5 MPH SHIFTING TO THE NORTHWEST IN THE AFTERNOON. CHANCE OF
PRECIPITATION 40 PERCENT.
TUESDAY NIGHT
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF
THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT.
PATCHY SMOKE THROUGH THE NIGHT. LOWS IN THE LOWER 50S. SOUTHWEST
WINDS 5 TO 15 MPH.
WEDNESDAY
SUNNY. HIGHS IN THE LOWER 80S. WEST WINDS 5 TO
15 MPH.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 50S. SOUTHWEST
WINDS UP TO 10 MPH.
THURSDAY THROUGH FRIDAY
MOSTLY CLEAR. HIGHS IN THE MID 80S.
LOWS IN THE MID 50S.
FRIDAY NIGHT
PARTLY CLOUDY IN THE EVENING THEN BECOMING MOSTLY
CLOUDY. A 20 PERCENT CHANCE OF RAIN SHOWERS. LOWS IN THE UPPER
50S.
SATURDAY
PARTLY SUNNY. SLIGHT CHANCE OF RAIN SHOWERS IN THE
MORNING, THEN CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE MID 80S. CHANCE OF
PRECIPITATION 40 PERCENT.
SATURDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
WITH SLIGHT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. LOWS IN THE
UPPER 50S. CHANCE OF PRECIPITATION 50 PERCENT.
SUNDAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS IN THE LOWER 80S.
SUNDAY NIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF RAIN
SHOWERS IN THE EVENING. LOWS IN THE LOWER 50S.
MONDAY
SUNNY. A 20 PERCENT CHANCE OF RAIN SHOWERS IN THE
AFTERNOON. HIGHS AROUND 80.
MTZ314-181000-
FERGUS COUNTY BELOW 4500FT-
INCLUDING THE CITIES OF HILGER AND LEWISTOWN
337 PM MDT MON AUG 17 2026
TONIGHT
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF
THUNDERSTORMS UNTIL EARLY MORNING, THEN PARTLY CLOUDY LATE IN THE
NIGHT. PATCHY SMOKE THROUGH THE NIGHT. LOWS 52 TO 58. NORTHWEST
WINDS UP TO 10 MPH SHIFTING TO THE SOUTHWEST AFTER MIDNIGHT.
TUESDAY
MOSTLY SUNNY. PATCHY SMOKE THROUGH THE DAY. A
20 PERCENT CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE
LOWER 80S. SOUTH WINDS UP TO 5 MPH SHIFTING TO THE NORTH IN THE
AFTERNOON.
TUESDAY NIGHT
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF
THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT.
PATCHY SMOKE THROUGH THE NIGHT. LOWS 53 TO 59. SOUTHWEST WINDS UP
TO 10 MPH.
WEDNESDAY
SUNNY. HIGHS IN THE MID 80S. WEST WINDS 5 TO 15 MPH.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS 54 TO 60. NORTHWEST WINDS
UP TO 10 MPH SHIFTING TO THE SOUTHWEST AFTER MIDNIGHT.
THURSDAY THROUGH FRIDAY
MOSTLY CLEAR. HIGHS IN THE MID 80S.
LOWS 54 TO 60.
FRIDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN MOSTLY CLOUDY
WITH A 20 PERCENT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. LOWS IN
THE LOWER 60S.
SATURDAY
PARTLY SUNNY WITH A 20 PERCENT CHANCE OF RAIN
SHOWERS. HIGHS IN THE UPPER 80S.
SATURDAY NIGHT
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN SLIGHT CHANCE
OF RAIN SHOWERS AFTER MIDNIGHT. LOWS 58 TO 64. CHANCE OF
PRECIPITATION 40 PERCENT.
SUNDAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS IN THE MID 80S.
SUNDAY NIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF RAIN
SHOWERS IN THE EVENING. LOWS 54 TO 60.
MONDAY
SUNNY. HIGHS IN THE LOWER 80S.
TEMPERATURE / PRECIPITATION
LEWISTOWN 50 79 51 82 / 50 30 20 0
MTZ315-181000-
UPPER BLACKFOOT AND MACDONALD PASS-
INCLUDING THE CITIES OF MARYSVILLE, LINCOLN, FLESHER PASS,
AND MACDONALD PASS
337 PM MDT MON AUG 17 2026
TONIGHT
MOSTLY CLOUDY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE EVENING. PATCHY SMOKE AFTER MIDNIGHT. LOWS 48 TO 56. WEST
WINDS UP TO 10 MPH. GUSTS UP TO 25 MPH IN THE EVENING.
TUESDAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS 69 TO 77. WEST WINDS UP TO 5 MPH INCREASING
TO 5 TO 15 MPH IN THE AFTERNOON.
TUESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING THEN CLEARING.
PATCHY SMOKE AFTER MIDNIGHT. LOWS 46 TO 54. WEST WINDS UP TO
10 MPH. GUSTS UP TO 25 MPH IN THE EVENING.
WEDNESDAY
SUNNY. HIGHS 70 TO 80. WEST WINDS UP TO 15 MPH.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS 48 TO 56. WEST WINDS UP TO
10 MPH.
THURSDAY AND THURSDAY NIGHT
MOSTLY CLEAR. HIGHS 73 TO 83. LOWS
50 TO 58.
FRIDAY
MOSTLY SUNNY. HIGHS 75 TO 83.
FRIDAY NIGHT
MOSTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS IN
THE EVENING, THEN SLIGHT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT.
LOWS 53 TO 61. CHANCE OF PRECIPITATION 20 PERCENT.
SATURDAY
PARTLY SUNNY. SLIGHT CHANCE OF RAIN SHOWERS IN THE
MORNING, THEN CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS 72 TO 80. CHANCE OF
PRECIPITATION 50 PERCENT.
SATURDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
AFTER MIDNIGHT. LOWS 49 TO 57. CHANCE OF PRECIPITATION
40 PERCENT.
SUNDAY
SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. HIGHS 67 TO 75.
SUNDAY NIGHT AND MONDAY
MOSTLY CLEAR. LOWS 47 TO 55. HIGHS
69 TO 77.
MTZ316-181000-
GATES OF THE MOUNTAINS-
INCLUDING THE CITIES OF CANYON CREEK, WOLF CREEK, AND CRAIG
337 PM MDT MON AUG 17 2026
TONIGHT
MOSTLY CLOUDY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE EVENING. PATCHY SMOKE AFTER MIDNIGHT. LOWS IN THE MID 50S.
NORTHWEST WINDS UP TO 10 MPH WITH GUSTS TO AROUND 25 MPH SHIFTING
TO THE SOUTHWEST AFTER MIDNIGHT.
TUESDAY
MOSTLY SUNNY. PATCHY SMOKE THROUGH THE DAY. A
20 PERCENT CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS 75 TO
83. SOUTHWEST WINDS UP TO 10 MPH SHIFTING TO THE WEST WITH GUSTS
TO AROUND 25 MPH IN THE AFTERNOON.
TUESDAY NIGHT
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF
THUNDERSTORMS IN THE EVENING, THEN MOSTLY CLEAR AFTER MIDNIGHT.
PATCHY SMOKE THROUGH THE NIGHT. LOWS IN THE LOWER 50S. SOUTHWEST
WINDS UP TO 10 MPH WITH GUSTS TO AROUND 25 MPH.
WEDNESDAY
SUNNY. HIGHS 77 TO 85. SOUTHWEST WINDS UP TO 15 MPH.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 50S. SOUTHWEST
WINDS UP TO 10 MPH. GUSTS UP TO 25 MPH IN THE EVENING.
THURSDAY AND THURSDAY NIGHT
MOSTLY CLEAR. HIGHS 78 TO 86. LOWS
IN THE MID 50S.
FRIDAY
MOSTLY SUNNY. HIGHS 79 TO 87.
FRIDAY NIGHT
PARTLY CLOUDY IN THE EVENING THEN BECOMING MOSTLY
CLOUDY. A 20 PERCENT CHANCE OF RAIN SHOWERS. LOWS IN THE UPPER
50S.
SATURDAY
PARTLY SUNNY. CHANCE OF RAIN SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS 78 TO 86. CHANCE
OF PRECIPITATION 40 PERCENT.
SATURDAY NIGHT
MOSTLY CLOUDY WITH A 40 PERCENT CHANCE OF RAIN
SHOWERS IN THE EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT. LOWS
IN THE MID 50S.
SUNDAY
SUNNY. A 20 PERCENT CHANCE OF RAIN SHOWERS IN THE
AFTERNOON. HIGHS 74 TO 80.
SUNDAY NIGHT AND MONDAY
MOSTLY CLEAR. LOWS IN THE MID 50S.
HIGHS 75 TO 83.
MTZ317-181000-
LITTLE BELT AND HIGHWOOD MOUNTAINS-
INCLUDING THE CITIES OF MONARCH, NEIHART, AND KINGS HILL PASS
337 PM MDT MON AUG 17 2026
TONIGHT
MOSTLY CLOUDY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE EVENING. PATCHY SMOKE AFTER MIDNIGHT. LOWS 49 TO 55. NORTH
WINDS UP TO 10 MPH WITH GUSTS TO AROUND 30 MPH SHIFTING TO THE
SOUTHWEST AFTER MIDNIGHT.
TUESDAY
MOSTLY SUNNY. A 40 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS 68 TO 76. WEST WINDS UP TO 15 MPH. GUSTS UP
TO 30 MPH IN THE AFTERNOON.
TUESDAY NIGHT
PATCHY SMOKE IN THE EVENING. MOSTLY CLOUDY WITH
A 20 PERCENT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY
CLOUDY AFTER MIDNIGHT. LOWS 48 TO 56. SOUTHWEST WINDS UP TO
10 MPH. GUSTS UP TO 30 MPH IN THE EVENING.
WEDNESDAY
SUNNY. HIGHS 71 TO 79. WEST WINDS 5 TO 15 MPH. GUSTS
UP TO 30 MPH IN THE AFTERNOON.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS 51 TO 57. WEST WINDS 5 TO
10 MPH WITH GUSTS TO AROUND 30 MPH SHIFTING TO THE SOUTHWEST
AFTER MIDNIGHT.
THURSDAY AND THURSDAY NIGHT
MOSTLY CLEAR. HIGHS 73 TO 81. LOWS
51 TO 57.
FRIDAY
MOSTLY SUNNY. HIGHS 75 TO 81.
FRIDAY NIGHT
PARTLY CLOUDY WITH SLIGHT CHANCE OF THUNDERSTORMS
IN THE EVENING, THEN MOSTLY CLOUDY WITH SLIGHT CHANCE OF RAIN
SHOWERS AFTER MIDNIGHT. LOWS 55 TO 63. CHANCE OF PRECIPITATION
20 PERCENT.
SATURDAY
PARTLY SUNNY. CHANCE OF RAIN SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS 74 TO 82. CHANCE
OF PRECIPITATION 40 PERCENT.
SATURDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
AFTER MIDNIGHT. LOWS 51 TO 59. CHANCE OF PRECIPITATION
50 PERCENT.
SUNDAY
SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. HIGHS 69 TO 77.
SUNDAY NIGHT
MOSTLY CLEAR. A 20 PERCENT CHANCE OF RAIN SHOWERS
IN THE EVENING. LOWS 49 TO 55.
MONDAY
SUNNY. HIGHS 70 TO 76.
MTZ318-181000-
SNOWY AND JUDITH MOUNTAINS-
337 PM MDT MON AUG 17 2026
TONIGHT
MOSTLY CLOUDY WITH CHANCE OF THUNDERSTORMS EARLY IN
THE EVENING, THEN MOSTLY CLOUDY WITH SLIGHT CHANCE OF
THUNDERSTORMS IN THE LATE EVENING AND EARLY MORNING. MOSTLY
CLOUDY LATE IN THE NIGHT. PATCHY SMOKE AFTER MIDNIGHT. LOWS IN
THE LOWER 50S. NORTHWEST WINDS UP TO 10 MPH SHIFTING TO THE
SOUTHWEST AFTER MIDNIGHT. CHANCE OF THUNDERSTORMS 50 PERCENT.
TUESDAY
MOSTLY SUNNY. SLIGHT CHANCE OF RAIN SHOWERS IN THE
MORNING, THEN CHANCE OF THUNDERSTORMS IN THE AFTERNOON. PATCHY
SMOKE THROUGH THE DAY. HIGHS 70 TO 76. SOUTHWEST WINDS UP TO
5 MPH SHIFTING TO THE WEST IN THE AFTERNOON. CHANCE OF
PRECIPITATION 40 PERCENT.
TUESDAY NIGHT
PATCHY SMOKE IN THE EVENING. MOSTLY CLOUDY WITH
A 20 PERCENT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY
CLOUDY AFTER MIDNIGHT. LOWS IN THE LOWER 50S. SOUTHWEST WINDS
5 TO 10 MPH. GUSTS UP TO 25 MPH AFTER MIDNIGHT.
WEDNESDAY
SUNNY. HIGHS 74 TO 80. WEST WINDS 5 TO 15 MPH.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS 52 TO 58. NORTHWEST WINDS
UP TO 10 MPH WITH GUSTS TO AROUND 25 MPH SHIFTING TO THE
SOUTHWEST AFTER MIDNIGHT.
THURSDAY AND THURSDAY NIGHT
MOSTLY CLEAR. HIGHS 76 TO 82. LOWS
IN THE MID 50S.
FRIDAY
MOSTLY SUNNY. HIGHS 75 TO 81.
FRIDAY NIGHT AND SATURDAY
MOSTLY CLOUDY. A 20 PERCENT CHANCE
OF RAIN SHOWERS. LOWS 55 TO 61. HIGHS 76 TO 82.
SATURDAY NIGHT
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS IN THE
EVENING, THEN SLIGHT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. LOWS
IN THE UPPER 50S. CHANCE OF SHOWERS 40 PERCENT.
SUNDAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS 73 TO 79.
SUNDAY NIGHT
PARTLY CLOUDY WITH A 20 PERCENT CHANCE OF RAIN
SHOWERS. LOWS IN THE MID 50S.
MONDAY
SUNNY. HIGHS 72 TO 78.
MTZ319-181000-
HELENA VALLEY-
INCLUDING THE CITY OF HELENA
337 PM MDT MON AUG 17 2026
TONIGHT
MOSTLY CLOUDY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE EVENING. LOWS IN THE LOWER 50S. WEST WINDS UP TO 10 MPH.
TUESDAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS IN THE LOWER 80S. SOUTHEAST WINDS UP TO
5 MPH SHIFTING TO THE WEST IN THE AFTERNOON.
TUESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING THEN CLEARING. LOWS
IN THE LOWER 50S. SOUTHWEST WINDS UP TO 10 MPH.
WEDNESDAY
SUNNY. HIGHS IN THE MID 80S. SOUTHWEST WINDS UP TO
5 MPH SHIFTING TO THE WEST IN THE AFTERNOON.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 50S. NORTHWEST
WINDS UP TO 10 MPH SHIFTING TO THE SOUTHWEST AFTER MIDNIGHT.
THURSDAY AND THURSDAY NIGHT
MOSTLY CLEAR. HIGHS IN THE UPPER
80S. LOWS IN THE MID 50S.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 80S.
FRIDAY NIGHT
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS IN THE EVENING. LOWS IN THE UPPER 50S.
CHANCE OF PRECIPITATION 30 PERCENT.
SATURDAY
PARTLY SUNNY. SLIGHT CHANCE OF RAIN SHOWERS IN THE
MORNING, THEN CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE MID 80S. CHANCE OF
PRECIPITATION 40 PERCENT.
SATURDAY NIGHT
MOSTLY CLOUDY WITH A 40 PERCENT CHANCE OF RAIN
SHOWERS IN THE EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT. LOWS
IN THE MID 50S.
SUNDAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS IN THE LOWER 80S.
SUNDAY NIGHT AND MONDAY
MOSTLY CLEAR. LOWS IN THE LOWER 50S.
HIGHS IN THE LOWER 80S.
TEMPERATURE / PRECIPITATION
HELENA 54 83 51 85 / 20 20 10 0
MTZ320-181000-
BIG BELT, BRIDGER AND CASTLE MOUNTAINS-
INCLUDING THE CITIES OF TRIDENT, MAUDLOW, BATTLE RIDGE PASS,
BOZEMAN PASS, AND DEEP CREEK PASS
337 PM MDT MON AUG 17 2026
TONIGHT
MOSTLY CLOUDY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE EVENING. LOWS IN THE LOWER 50S. NORTHWEST WINDS UP TO 10 MPH
WITH GUSTS TO AROUND 30 MPH SHIFTING TO THE SOUTHWEST AFTER
MIDNIGHT.
TUESDAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS 68 TO 76. WEST WINDS UP TO 10 MPH. GUSTS UP
TO 20 MPH INCREASING TO 30 MPH IN THE AFTERNOON.
TUESDAY NIGHT
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF
THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT.
LOWS IN THE LOWER 50S. SOUTHWEST WINDS UP TO 10 MPH. GUSTS UP TO
30 MPH IN THE EVENING.
WEDNESDAY
SUNNY. HIGHS 70 TO 80. SOUTHWEST WINDS UP TO 15 MPH.
GUSTS UP TO 25 MPH INCREASING TO 35 MPH IN THE AFTERNOON.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 50S. NORTHWEST
WINDS 5 TO 10 MPH WITH GUSTS TO AROUND 30 MPH SHIFTING TO THE
SOUTH AFTER MIDNIGHT.
THURSDAY
SUNNY. HIGHS 73 TO 83.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS IN THE MID 50S.
HIGHS 74 TO 84.
FRIDAY NIGHT
PARTLY CLOUDY WITH SLIGHT CHANCE OF THUNDERSTORMS
IN THE EVENING, THEN MOSTLY CLOUDY WITH SLIGHT CHANCE OF RAIN
SHOWERS AFTER MIDNIGHT. LOWS IN THE UPPER 50S. CHANCE OF
PRECIPITATION 20 PERCENT.
SATURDAY AND SATURDAY NIGHT
MOSTLY CLOUDY. CHANCE OF RAIN
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS. HIGHS 73 TO 81. LOWS
IN THE MID 50S. CHANCE OF PRECIPITATION 50 PERCENT.
SUNDAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS 68 TO 78.
SUNDAY NIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF RAIN
SHOWERS IN THE EVENING. LOWS IN THE LOWER 50S.
MONDAY
SUNNY. HIGHS 69 TO 77.
MTZ321-181000-
MEAGHER COUNTY VALLEYS-
INCLUDING THE CITIES OF MARTINSDALE, CHECKERBOARD, RINGLING,
AND WHITE SULPHUR SPRINGS
337 PM MDT MON AUG 17 2026
TONIGHT
MOSTLY CLOUDY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE EVENING. LOWS AROUND 50. NORTHWEST WINDS 5 TO 10 MPH WITH
GUSTS TO AROUND 30 MPH SHIFTING TO THE EAST AFTER MIDNIGHT.
TUESDAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS IN THE MID 70S. SOUTHWEST WINDS UP TO 5 MPH
WITH GUSTS TO AROUND 20 MPH INCREASING TO WEST 10 TO 15 MPH WITH
GUSTS TO AROUND 30 MPH IN THE AFTERNOON.
TUESDAY NIGHT
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF
THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT.
LOWS IN THE UPPER 40S. WEST WINDS 5 TO 10 MPH WITH GUSTS TO
AROUND 30 MPH SHIFTING TO THE SOUTH AFTER MIDNIGHT.
WEDNESDAY
SUNNY. HIGHS IN THE UPPER 70S. SOUTHWEST WINDS UP TO
5 MPH WITH GUSTS TO AROUND 20 MPH INCREASING TO WEST 10 TO 15 MPH
WITH GUSTS TO AROUND 30 MPH IN THE AFTERNOON.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 50S. WEST
WINDS 5 TO 10 MPH WITH GUSTS TO AROUND 30 MPH SHIFTING TO THE
SOUTH AFTER MIDNIGHT.
THURSDAY
SUNNY. HIGHS IN THE LOWER 80S.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS IN THE LOWER
50S. HIGHS IN THE LOWER 80S.
FRIDAY NIGHT
PARTLY CLOUDY WITH SLIGHT CHANCE OF THUNDERSTORMS
IN THE EVENING, THEN MOSTLY CLOUDY WITH SLIGHT CHANCE OF RAIN
SHOWERS AFTER MIDNIGHT. LOWS IN THE MID 50S. CHANCE OF
PRECIPITATION 20 PERCENT.
SATURDAY
PARTLY SUNNY. SLIGHT CHANCE OF RAIN SHOWERS IN THE
MORNING, THEN CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE LOWER 80S. CHANCE OF
PRECIPITATION 30 PERCENT.
SATURDAY 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 50S. CHANCE OF PRECIPITATION
40 PERCENT.
SUNDAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS IN THE UPPER 70S.
SUNDAY NIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF RAIN
SHOWERS IN THE EVENING. LOWS AROUND 50.
MONDAY
SUNNY. HIGHS IN THE UPPER 70S.
MTZ322-181000-
ELKHORN AND BOULDER MOUNTAINS-
INCLUDING THE CITIES OF MONTANA CITY, CLANCY, BOULDER, CORBIN,
WICKES, ELK PARK PASS, AND HOMESTAKE PASS
337 PM MDT MON AUG 17 2026
TONIGHT
MOSTLY CLOUDY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE EVENING. LOWS 50 TO 56. WEST WINDS UP TO 10 MPH. GUSTS UP TO
25 MPH IN THE EVENING.
TUESDAY
MOSTLY SUNNY. A 40 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS 68 TO 76. WEST WINDS UP TO 10 MPH. GUSTS UP
TO 25 MPH IN THE AFTERNOON.
TUESDAY NIGHT
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF
THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT.
LOWS 47 TO 53. WEST WINDS UP TO 10 MPH. GUSTS UP TO 25 MPH IN THE
EVENING.
WEDNESDAY
SUNNY. HIGHS 71 TO 81. WEST WINDS UP TO 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS 49 TO 57. WEST WINDS UP TO
10 MPH.
THURSDAY
SUNNY. HIGHS 74 TO 84.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS 51 TO 59. HIGHS
75 TO 83.
FRIDAY NIGHT
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS IN THE EVENING, THEN SLIGHT CHANCE OF
RAIN SHOWERS AFTER MIDNIGHT. LOWS 53 TO 61. CHANCE OF
PRECIPITATION 40 PERCENT.
SATURDAY
PARTLY SUNNY. SLIGHT CHANCE OF RAIN SHOWERS IN THE
MORNING, THEN CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS 73 TO 81. CHANCE OF
PRECIPITATION 50 PERCENT.
SATURDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
WITH SLIGHT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. LOWS 49 TO 57.
CHANCE OF PRECIPITATION 40 PERCENT.
SUNDAY
MOSTLY SUNNY. SLIGHT CHANCE OF RAIN SHOWERS IN THE
MORNING, THEN SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON.
HIGHS 69 TO 77. CHANCE OF PRECIPITATION 20 PERCENT.
SUNDAY NIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF RAIN
SHOWERS IN THE EVENING. LOWS 47 TO 55.
MONDAY
SUNNY. HIGHS 69 TO 77.
MTZ323-181000-
CANYON FERRY AREA-
INCLUDING THE CITIES OF TOSTON, TOWNSEND, AND WINSTON
337 PM MDT MON AUG 17 2026
TONIGHT
MOSTLY CLOUDY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE EVENING. LOWS IN THE MID 50S. NORTHWEST WINDS UP TO 10 MPH
SHIFTING TO THE SOUTH AFTER MIDNIGHT.
TUESDAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS IN THE UPPER 70S. SOUTH WINDS UP TO 5 MPH
SHIFTING TO THE NORTHWEST IN THE AFTERNOON.
TUESDAY NIGHT
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF
THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT.
LOWS 50 TO 56. SOUTH WINDS UP TO 10 MPH.
WEDNESDAY
SUNNY. HIGHS IN THE LOWER 80S. SOUTH WINDS UP TO
5 MPH SHIFTING TO THE WEST WITH GUSTS TO AROUND 25 MPH IN THE
AFTERNOON.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS 52 TO 58. NORTHWEST WINDS
5 TO 10 MPH SHIFTING TO THE SOUTHEAST AFTER MIDNIGHT.
THURSDAY
SUNNY. HIGHS IN THE MID 80S.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS IN THE UPPER
50S. HIGHS IN THE MID 80S.
FRIDAY NIGHT
MOSTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS IN
THE EVENING, THEN SLIGHT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT.
LOWS 56 TO 62. CHANCE OF PRECIPITATION 20 PERCENT.
SATURDAY AND SATURDAY NIGHT
MOSTLY CLOUDY. CHANCE OF RAIN
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS. HIGHS IN THE MID 80S.
LOWS IN THE MID 50S. CHANCE OF PRECIPITATION 40 PERCENT.
SUNDAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS AROUND 80.
SUNDAY NIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF RAIN
SHOWERS IN THE EVENING. LOWS IN THE MID 50S.
MONDAY
SUNNY. HIGHS AROUND 80.
MTZ324-181000-
MISSOURI HEADWATERS-
INCLUDING THE CITIES OF HARRISON, THREE FORKS, WILLOW CREEK,
PONY, AND WHITEHALL
337 PM MDT MON AUG 17 2026
TONIGHT
MOSTLY CLOUDY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE EVENING. LOWS IN THE LOWER 50S. WEST WINDS UP TO 5 MPH. GUSTS
UP TO 20 MPH IN THE EVENING.
TUESDAY
MOSTLY SUNNY. A 40 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS AROUND 80. SOUTHWEST WINDS UP TO 5 MPH
SHIFTING TO THE NORTHWEST IN THE AFTERNOON.
TUESDAY NIGHT
MOSTLY CLOUDY WITH A 40 PERCENT CHANCE OF
THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT.
LOWS IN THE LOWER 50S. SOUTHWEST WINDS UP TO 5 MPH. GUSTS UP TO
20 MPH IN THE EVENING.
WEDNESDAY
SUNNY. HIGHS IN THE MID 80S. WEST WINDS UP TO
10 MPH. GUSTS UP TO 25 MPH IN THE AFTERNOON.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 50S. WEST
WINDS UP TO 10 MPH.
THURSDAY
SUNNY. HIGHS IN THE UPPER 80S.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS IN THE MID 50S.
HIGHS IN THE UPPER 80S.
FRIDAY NIGHT
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS IN THE EVENING, THEN SLIGHT CHANCE OF
RAIN SHOWERS AFTER MIDNIGHT. LOWS IN THE UPPER 50S. CHANCE OF
PRECIPITATION 40 PERCENT.
SATURDAY
PARTLY SUNNY. SLIGHT CHANCE OF RAIN SHOWERS IN THE
MORNING, THEN CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE MID 80S. CHANCE OF
PRECIPITATION 50 PERCENT.
SATURDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
WITH SLIGHT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. LOWS IN THE
MID 50S. CHANCE OF PRECIPITATION 40 PERCENT.
SUNDAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS IN THE LOWER 80S.
SUNDAY NIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF RAIN
SHOWERS IN THE EVENING. LOWS IN THE LOWER 50S.
MONDAY
SUNNY. HIGHS IN THE LOWER 80S.
MTZ325-181000-
MADISON RIVER VALLEY-
INCLUDING THE CITIES OF CAMERON, ENNIS, JEFFERS, MCALLISTER,
AND NORRIS
337 PM MDT MON AUG 17 2026
TONIGHT
MOSTLY CLOUDY. CHANCE OF THUNDERSTORMS EARLY IN THE
EVENING, THEN SLIGHT CHANCE OF THUNDERSTORMS IN THE LATE EVENING
AND EARLY MORNING. LOWS 48 TO 54. SOUTH WINDS UP TO 10 MPH.
CHANCE OF THUNDERSTORMS 50 PERCENT.
TUESDAY
MOSTLY SUNNY. A 40 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS IN THE UPPER 70S. SOUTH WINDS UP TO 5 MPH
SHIFTING TO THE NORTHWEST IN THE AFTERNOON.
TUESDAY NIGHT
MOSTLY CLOUDY WITH A 40 PERCENT CHANCE OF
THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT.
LOWS 46 TO 52. NORTHEAST WINDS 5 TO 10 MPH SHIFTING TO THE SOUTH
AFTER MIDNIGHT.
WEDNESDAY
SUNNY. HIGHS IN THE LOWER 80S. SOUTH WINDS UP TO
10 MPH SHIFTING TO THE WEST IN THE AFTERNOON.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS 49 TO 55. WEST WINDS UP TO
10 MPH SHIFTING TO THE SOUTH AFTER MIDNIGHT.
THURSDAY
SUNNY. HIGHS IN THE MID 80S.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS 53 TO 59.
FRIDAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS IN THE MID 80S.
FRIDAY NIGHT
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS IN THE EVENING, THEN SLIGHT CHANCE OF
RAIN SHOWERS AFTER MIDNIGHT. LOWS 54 TO 60. CHANCE OF
PRECIPITATION 40 PERCENT.
SATURDAY
PARTLY SUNNY. SLIGHT CHANCE OF RAIN SHOWERS IN THE
MORNING, THEN CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS IN
THE LOWER 80S. CHANCE OF PRECIPITATION 50 PERCENT.
SATURDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
WITH SLIGHT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. LOWS 50 TO 56.
CHANCE OF PRECIPITATION 40 PERCENT.
SUNDAY
MOSTLY SUNNY. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS IN THE AFTERNOON. HIGHS AROUND 80. CHANCE OF
PRECIPITATION 40 PERCENT.
SUNDAY NIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF RAIN
SHOWERS IN THE EVENING. LOWS 48 TO 54.
MONDAY
SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. HIGHS IN THE UPPER 70S.
MTZ326-181000-
GALLATIN VALLEY-
INCLUDING THE CITIES OF BOZEMAN AND GALLATIN GATEWAY
337 PM MDT MON AUG 17 2026
TONIGHT
MOSTLY CLOUDY. CHANCE OF THUNDERSTORMS EARLY IN THE
EVENING, THEN SLIGHT CHANCE OF THUNDERSTORMS IN THE LATE EVENING
AND EARLY MORNING. LOWS IN THE LOWER 50S. SOUTHEAST WINDS UP TO
10 MPH. CHANCE OF THUNDERSTORMS 50 PERCENT.
TUESDAY
MOSTLY SUNNY. A 40 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS IN THE UPPER 70S. SOUTHEAST WINDS UP TO
5 MPH SHIFTING TO THE NORTHWEST IN THE AFTERNOON.
TUESDAY NIGHT
MOSTLY CLOUDY WITH A 40 PERCENT CHANCE OF
THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT.
LOWS AROUND 50. SOUTH WINDS UP TO 10 MPH.
WEDNESDAY
SUNNY. HIGHS IN THE LOWER 80S. SOUTH WINDS UP TO
5 MPH SHIFTING TO THE WEST IN THE AFTERNOON.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 50S. NORTHWEST
WINDS UP TO 10 MPH SHIFTING TO THE SOUTHEAST AFTER MIDNIGHT.
THURSDAY
SUNNY. HIGHS IN THE MID 80S.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS IN THE MID 50S.
HIGHS IN THE UPPER 80S.
FRIDAY NIGHT
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS IN THE EVENING, THEN SLIGHT CHANCE OF
RAIN SHOWERS AFTER MIDNIGHT. LOWS IN THE UPPER 50S. CHANCE OF
PRECIPITATION 30 PERCENT.
SATURDAY AND SATURDAY NIGHT
MOSTLY CLOUDY. CHANCE OF RAIN
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS. HIGHS IN THE MID 80S.
LOWS IN THE MID 50S. CHANCE OF PRECIPITATION 50 PERCENT.
SUNDAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS IN THE LOWER 80S.
SUNDAY NIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF RAIN
SHOWERS IN THE EVENING. LOWS IN THE LOWER 50S.
MONDAY
SUNNY. HIGHS AROUND 80.
TEMPERATURE / PRECIPITATION
BOZEMAN AIRPORT 51 80 49 84 / 30 30 30 0
BOZEMAN MSU 53 78 52 82 / 40 30 40 0
MTZ330-181000-
GALLATIN AND MADISON COUNTY MOUNTAINS AND CENTENNIAL MOUNTAINS-
INCLUDING THE CITIES OF BIG SKY, WEST YELLOWSTONE, TARGHEE PASS,
AND RAYNOLDS PASS
337 PM MDT MON AUG 17 2026
TONIGHT
MOSTLY CLOUDY. CHANCE OF THUNDERSTORMS IN THE EVENING,
THEN SLIGHT CHANCE OF THUNDERSTORMS AFTER MIDNIGHT. LOWS 46 TO
52. SOUTHWEST WINDS UP TO 10 MPH. CHANCE OF THUNDERSTORMS
50 PERCENT.
TUESDAY
MOSTLY SUNNY. SLIGHT CHANCE OF RAIN SHOWERS IN THE
MORNING, THEN CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS
64 TO 74. SOUTHWEST WINDS UP TO 5 MPH WITH GUSTS TO AROUND 20 MPH
SHIFTING TO THE WEST 5 TO 15 MPH WITH GUSTS TO AROUND 30 MPH IN
THE AFTERNOON. CHANCE OF PRECIPITATION 50 PERCENT.
TUESDAY NIGHT
MOSTLY CLOUDY WITH A 50 PERCENT CHANCE OF
THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT.
LOWS 43 TO 51. NORTHWEST WINDS UP TO 10 MPH WITH GUSTS TO AROUND
25 MPH SHIFTING TO THE SOUTHWEST AFTER MIDNIGHT.
WEDNESDAY
SUNNY. HIGHS 67 TO 77. SOUTHWEST WINDS UP TO 10 MPH
SHIFTING TO THE WEST WITH GUSTS TO AROUND 30 MPH IN THE
AFTERNOON.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS 47 TO 55. WEST WINDS UP TO
10 MPH WITH GUSTS TO AROUND 25 MPH SHIFTING TO THE SOUTH AFTER
MIDNIGHT.
THURSDAY
SUNNY. HIGHS 71 TO 81.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS 50 TO 58.
FRIDAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS 72 TO 82.
FRIDAY NIGHT
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS IN THE EVENING, THEN SLIGHT CHANCE OF
RAIN SHOWERS AFTER MIDNIGHT. LOWS 52 TO 58. CHANCE OF
PRECIPITATION 50 PERCENT.
SATURDAY
MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS IN THE
MORNING, THEN CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS
68 TO 78. CHANCE OF PRECIPITATION 50 PERCENT.
SATURDAY NIGHT
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN SLIGHT CHANCE
OF RAIN SHOWERS AFTER MIDNIGHT. LOWS 48 TO 54. CHANCE OF
PRECIPITATION 50 PERCENT.
SUNDAY
MOSTLY SUNNY. SLIGHT CHANCE OF RAIN SHOWERS IN THE
MORNING, THEN CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS
65 TO 75. CHANCE OF PRECIPITATION 40 PERCENT.
SUNDAY NIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF RAIN
SHOWERS IN THE EVENING. LOWS 46 TO 52.
MONDAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS 64 TO 74.
TEMPERATURE / PRECIPITATION
WEST YELLOWSTONE 39 75 36 79 / 60 30 30 0
MTZ327-181000-
NORTHWEST BEAVERHEAD COUNTY-
INCLUDING THE CITIES OF DEWEY, WISDOM, WISE RIVER, BIG HOLE PASS,
AND CHIEF JOSEPH PASS
337 PM MDT MON AUG 17 2026
TONIGHT
MOSTLY CLOUDY. A 20 PERCENT CHANCE OF THUNDERSTORMS
UNTIL EARLY MORNING. LOWS 42 TO 52. NORTHWEST WINDS UP TO 10 MPH
WITH GUSTS TO AROUND 25 MPH SHIFTING TO THE SOUTHWEST AFTER
MIDNIGHT.
TUESDAY
MOSTLY SUNNY. A 40 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS 66 TO 76. WEST WINDS UP TO 5 MPH INCREASING
TO 5 TO 15 MPH IN THE AFTERNOON.
TUESDAY NIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF
THUNDERSTORMS IN THE EVENING. LOWS 40 TO 50. NORTHWEST WINDS 5 TO
10 MPH WITH GUSTS TO AROUND 25 MPH SHIFTING TO THE SOUTHWEST
AFTER MIDNIGHT.
WEDNESDAY
SUNNY. HIGHS 69 TO 79. SOUTHWEST WINDS UP TO 5 MPH
SHIFTING TO THE WEST 5 TO 15 MPH IN THE AFTERNOON.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS 43 TO 53. NORTHWEST WINDS
5 TO 10 MPH WITH GUSTS TO AROUND 25 MPH SHIFTING TO THE SOUTHWEST
AFTER MIDNIGHT.
THURSDAY
SUNNY. HIGHS 73 TO 83.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS 47 TO 57.
FRIDAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS 73 TO 83.
FRIDAY NIGHT AND SATURDAY
MOSTLY CLOUDY. CHANCE OF RAIN
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS. LOWS 47 TO 57. HIGHS
69 TO 79. CHANCE OF PRECIPITATION 50 PERCENT.
SATURDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
WITH SLIGHT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. LOWS 43 TO 53.
CHANCE OF PRECIPITATION 40 PERCENT.
SUNDAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS 65 TO 75.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS 41 TO 51.
MONDAY
SUNNY. HIGHS 66 TO 76.
MTZ328-181000-
BEAVERHEAD AND WESTERN MADISON BELOW 6000FT-
INCLUDING THE CITIES OF BANNACK, DILLON, GLEN, AND WATERLOO
337 PM MDT MON AUG 17 2026
TONIGHT
MOSTLY CLOUDY. CHANCE OF THUNDERSTORMS EARLY IN THE
EVENING, THEN SLIGHT CHANCE OF THUNDERSTORMS IN THE LATE EVENING
AND EARLY MORNING. LOWS IN THE LOWER 50S. NORTH WINDS UP TO
10 MPH SHIFTING TO THE SOUTH AFTER MIDNIGHT. CHANCE OF
THUNDERSTORMS 50 PERCENT.
TUESDAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS 75 TO 81. SOUTHWEST WINDS UP TO 5 MPH
SHIFTING TO THE WEST WITH GUSTS TO AROUND 25 MPH IN THE
AFTERNOON.
TUESDAY NIGHT
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF
THUNDERSTORMS IN THE EVENING, THEN MOSTLY CLEAR AFTER MIDNIGHT.
LOWS IN THE UPPER 40S. NORTH WINDS UP TO 10 MPH WITH GUSTS TO
AROUND 25 MPH SHIFTING TO THE SOUTHWEST AFTER MIDNIGHT.
WEDNESDAY
SUNNY. HIGHS 78 TO 84. SOUTHWEST WINDS UP TO 10 MPH.
GUSTS UP TO 25 MPH IN THE AFTERNOON.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 50S. NORTHWEST
WINDS 5 TO 10 MPH SHIFTING TO THE SOUTHWEST AFTER MIDNIGHT.
THURSDAY
SUNNY. HIGHS 81 TO 87.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S.
FRIDAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS 81 TO 87.
FRIDAY NIGHT AND SATURDAY
MOSTLY CLOUDY. CHANCE OF RAIN
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE MID 50S.
HIGHS 78 TO 84. CHANCE OF PRECIPITATION 50 PERCENT.
SATURDAY NIGHT
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
WITH SLIGHT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. LOWS IN THE
LOWER 50S. CHANCE OF PRECIPITATION 40 PERCENT.
SUNDAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS 75 TO 81.
SUNDAY NIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF RAIN
SHOWERS IN THE EVENING. LOWS AROUND 50.
MONDAY
SUNNY. HIGHS 75 TO 81.
TEMPERATURE / PRECIPITATION
DILLON 49 80 47 83 / 50 20 20 0
MTZ329-181000-
RUBY MOUNTAINS AND SOUTHERN BEAVERHEAD MOUNTAINS-
INCLUDING THE CITY OF MONIDA PASS
337 PM MDT MON AUG 17 2026
TONIGHT
MOSTLY CLOUDY. CHANCE OF THUNDERSTORMS EARLY IN THE
EVENING, THEN SLIGHT CHANCE OF THUNDERSTORMS IN THE LATE EVENING
AND EARLY MORNING. LOWS IN THE LOWER 50S. SOUTHWEST WINDS UP TO
10 MPH. GUSTS UP TO 25 MPH IN THE EVENING. CHANCE OF
THUNDERSTORMS 50 PERCENT.
TUESDAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS 68 TO 76. SOUTHWEST WINDS UP TO 5 MPH WITH
GUSTS TO AROUND 20 MPH INCREASING TO WEST 10 TO 15 MPH WITH GUSTS
TO AROUND 30 MPH IN THE AFTERNOON.
TUESDAY NIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF
THUNDERSTORMS IN THE EVENING. LOWS IN THE UPPER 40S. NORTHWEST
WINDS 5 TO 10 MPH WITH GUSTS TO AROUND 25 MPH SHIFTING TO THE
SOUTHWEST AFTER MIDNIGHT.
WEDNESDAY
SUNNY. HIGHS 71 TO 79. SOUTHWEST WINDS UP TO 5 MPH
SHIFTING TO THE WEST 5 TO 15 MPH IN THE AFTERNOON.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. WEST
WINDS 5 TO 10 MPH SHIFTING TO THE SOUTH AFTER MIDNIGHT.
THURSDAY
SUNNY. HIGHS 74 TO 82.
THURSDAY NIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF RAIN
SHOWERS IN THE EVENING. LOWS IN THE MID 50S.
FRIDAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS 75 TO 83.
FRIDAY NIGHT
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS IN THE EVENING, THEN SLIGHT CHANCE OF
RAIN SHOWERS AFTER MIDNIGHT. LOWS IN THE MID 50S. CHANCE OF
PRECIPITATION 40 PERCENT.
SATURDAY
PARTLY SUNNY. SLIGHT CHANCE OF RAIN SHOWERS IN THE
MORNING, THEN CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS 71 TO 79. CHANCE OF
PRECIPITATION 50 PERCENT.
SATURDAY NIGHT
MOSTLY CLOUDY WITH A 40 PERCENT CHANCE OF RAIN
SHOWERS IN THE EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT. LOWS
IN THE LOWER 50S.
SUNDAY
MOSTLY SUNNY. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS IN THE AFTERNOON. HIGHS 68 TO 76. CHANCE OF
PRECIPITATION 40 PERCENT.
SUNDAY NIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF RAIN
SHOWERS IN THE EVENING. LOWS AROUND 50.
MONDAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS 67 TO 75.
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