400
FPUS55 KTFX 180632
ZFPTFX
ZONE FORECAST PRODUCT FOR CENTRAL AND SOUTHWEST MONTANA
NATIONAL WEATHER SERVICE GREAT FALLS MT
1232 AM MDT FRI SEP 18 2026
SPOT TEMPERATURES AND PROBABILITIES OF MEASURABLE PRECIPITATION
ARE FOR .TONIGHT THROUGH TODAY..., SATURDAY, SATURDAY NIGHT, AND
SUNDAY.
MTZ301-191000-
EAST GLACIER PARK REGION-
INCLUDING THE CITIES OF EAST GLACIER PARK, KIOWA, BABB,
SAINT MARY, MARIAS PASS, AND LOGAN PASS
1232 AM MDT FRI SEP 18 2026
REST OF TONIGHT
PARTLY CLOUDY. A 20 PERCENT CHANCE OF RAIN
SHOWERS. HIGHS 58 TO 66. LOWS 42 TO 47. SOUTHEAST WINDS UP TO
10 MPH.
SATURDAY
MOSTLY SUNNY. HIGHS 57 TO 65. EAST WINDS UP TO
10 MPH.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 40S. SOUTH WINDS
UP TO 10 MPH SHIFTING TO THE SOUTHWEST AFTER MIDNIGHT.
SUNDAY AND SUNDAY NIGHT
MOSTLY CLEAR. HIGHS 59 TO 69. LOWS IN
THE MID 40S. SOUTHWEST WINDS UP TO 10 MPH.
MONDAY AND MONDAY NIGHT
MOSTLY CLEAR. HIGHS 59 TO 69. LOWS IN
THE MID 40S.
TUESDAY THROUGH FRIDAY
PARTLY CLOUDY. HIGHS 56 TO 68. LOWS IN
THE MID 40S.
MTZ307-191000-
SOUTHERN ROCKY MOUNTAIN FRONT-
INCLUDING THE CITY OF ROGERS PASS
1232 AM MDT FRI SEP 18 2026
REST OF TONIGHT
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS. HIGHS 58 TO 66. LOWS 42 TO 48.
NORTHEAST WINDS UP TO 10 MPH. CHANCE OF PRECIPITATION 50 PERCENT.
SATURDAY
MOSTLY CLOUDY. CHANCE OF RAIN IN THE MORNING, THEN
CHANCE OF RAIN SHOWERS IN THE AFTERNOON. HIGHS 53 TO 61.
NORTHEAST WINDS UP TO 10 MPH. GUSTS UP TO 20 MPH IN THE MORNING.
CHANCE OF PRECIPITATION 50 PERCENT.
SATURDAY NIGHT
MOSTLY CLOUDY IN THE EVENING THEN BECOMING
PARTLY CLOUDY. LOWS IN THE LOWER 40S. EAST WINDS UP TO 5 MPH
SHIFTING TO THE WEST AFTER MIDNIGHT.
SUNDAY AND SUNDAY NIGHT
MOSTLY CLEAR. HIGHS 59 TO 69. LOWS IN
THE MID 40S. WEST WINDS UP TO 10 MPH.
MONDAY THROUGH TUESDAY
MOSTLY CLEAR. HIGHS 59 TO 71. LOWS IN
THE MID 40S.
TUESDAY NIGHT THROUGH FRIDAY
PARTLY CLOUDY. LOWS IN THE MID
40S. HIGHS 58 TO 71.
MTZ302-191000-
NORTHERN HIGH PLAINS-
INCLUDING THE CITIES OF BROWNING, HEART BUTTE, AND DUPUYER
1232 AM MDT FRI SEP 18 2026
REST OF TONIGHT
PARTLY CLOUDY. HIGHS IN THE UPPER 60S. LOWS IN
THE UPPER 40S. WEST WINDS UP TO 10 MPH.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S. EAST WINDS UP TO
5 MPH SHIFTING TO THE SOUTHEAST 5 TO 15 MPH IN THE AFTERNOON.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 40S. SOUTHEAST
WINDS 5 TO 10 MPH SHIFTING TO THE SOUTHWEST AFTER MIDNIGHT. GUSTS
UP TO 25 MPH.
SUNDAY AND SUNDAY NIGHT
MOSTLY CLEAR. HIGHS IN THE LOWER 70S.
LOWS IN THE MID 40S. SOUTHWEST WINDS UP TO 10 MPH.
MONDAY AND MONDAY NIGHT
MOSTLY CLEAR. HIGHS IN THE LOWER 70S.
LOWS IN THE UPPER 40S.
TUESDAY THROUGH FRIDAY
PARTLY CLOUDY. HIGHS AROUND 70. LOWS IN
THE UPPER 40S.
MTZ308-191000-
SOUTHERN HIGH PLAINS-
INCLUDING THE CITIES OF BYNUM, CHOTEAU, AND PENDROY
1232 AM MDT FRI SEP 18 2026
REST OF TONIGHT
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS. HIGHS AROUND 70. LOWS IN THE
LOWER 50S. NORTHWEST WINDS UP TO 10 MPH. CHANCE OF PRECIPITATION
50 PERCENT.
SATURDAY
MOSTLY CLOUDY. CHANCE OF RAIN IN THE MORNING, THEN
SLIGHT CHANCE OF RAIN SHOWERS IN THE AFTERNOON. HIGHS IN THE MID
60S. NORTH WINDS UP TO 10 MPH. CHANCE OF PRECIPITATION
50 PERCENT.
SATURDAY NIGHT
MOSTLY CLOUDY IN THE EVENING THEN BECOMING
PARTLY CLOUDY. LOWS IN THE MID 40S. SOUTHEAST WINDS UP TO 5 MPH
SHIFTING TO THE SOUTHWEST AFTER MIDNIGHT.
SUNDAY
SUNNY. HIGHS IN THE LOWER 70S. SOUTHWEST WINDS UP TO
5 MPH SHIFTING TO THE SOUTHEAST IN THE AFTERNOON.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 40S. SOUTHEAST
WINDS UP TO 10 MPH SHIFTING TO THE SOUTHWEST AFTER MIDNIGHT.
MONDAY
SUNNY. HIGHS IN THE MID 70S.
MONDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S.
TUESDAY
SUNNY. HIGHS IN THE MID 70S.
TUESDAY NIGHT THROUGH FRIDAY
PARTLY CLOUDY. LOWS AROUND 50.
HIGHS IN THE MID 70S.
MTZ303-191000-
EASTERN GLACIER, WESTERN TOOLE, AND CENTRAL PONDERA-
INCLUDING THE CITIES OF CUT BANK, ETHRIDGE, AND SANTA RITA
1232 AM MDT FRI SEP 18 2026
REST OF TONIGHT
PARTLY CLOUDY. HIGHS IN THE UPPER 60S. LOWS IN
THE UPPER 40S. NORTH WINDS UP TO 10 MPH.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S. EAST WINDS UP
TO 10 MPH.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 40S. SOUTHEAST
WINDS UP TO 10 MPH.
SUNDAY AND SUNDAY NIGHT
MOSTLY CLEAR. HIGHS IN THE LOWER 70S.
LOWS IN THE MID 40S. SOUTH WINDS UP TO 15 MPH.
MONDAY THROUGH TUESDAY
MOSTLY CLEAR. HIGHS IN THE LOWER 70S.
LOWS IN THE UPPER 40S.
TUESDAY NIGHT THROUGH FRIDAY
PARTLY CLOUDY. LOWS IN THE UPPER
40S. HIGHS IN THE LOWER 70S.
TEMPERATURE / PRECIPITATION
CUT BANK 46 67 44 72 / 10 0 0 0
MTZ304-191000-
EASTERN TOOLE AND LIBERTY-
INCLUDING THE CITIES OF DEVON, SHELBY, CHESTER, GALATA, JOPLIN,
LOTHAIR, AND WHITLASH
1232 AM MDT FRI SEP 18 2026
REST OF TONIGHT
PARTLY CLOUDY. HIGHS 68 TO 74. LOWS IN THE
UPPER 40S. NORTHEAST WINDS UP TO 10 MPH.
SATURDAY
PARTLY SUNNY. HIGHS IN THE UPPER 60S. EAST WINDS UP
TO 10 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY IN THE EVENING THEN BECOMING
PARTLY CLOUDY. PATCHY FOG AFTER MIDNIGHT. LOWS IN THE MID 40S.
SOUTHEAST WINDS UP TO 10 MPH.
SUNDAY
SUNNY. PATCHY FOG IN THE MORNING. HIGHS IN THE LOWER
70S. SOUTHEAST WINDS UP TO 10 MPH.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 40S. SOUTHEAST
WINDS 5 TO 10 MPH WITH GUSTS TO AROUND 25 MPH.
MONDAY THROUGH TUESDAY
MOSTLY CLEAR. HIGHS 70 TO 78. LOWS IN
THE UPPER 40S.
TUESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S.
WEDNESDAY
SUNNY. HIGHS IN THE LOWER 70S.
WEDNESDAY NIGHT THROUGH FRIDAY
PARTLY CLOUDY. LOWS IN THE
UPPER 40S. HIGHS 70 TO 76.
MTZ305-191000-
HILL COUNTY-
INCLUDING THE CITY OF HAVRE
1232 AM MDT FRI SEP 18 2026
REST OF TONIGHT
MOSTLY CLOUDY. HIGHS IN THE MID 70S. LOWS IN
THE UPPER 40S. NORTHEAST WINDS UP TO 15 MPH.
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE UPPER 60S. NORTHEAST
WINDS 5 TO 10 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. PATCHY FOG AFTER MIDNIGHT. LOWS
IN THE UPPER 40S. EAST WINDS UP TO 10 MPH.
SUNDAY
MOSTLY SUNNY. PATCHY FOG IN THE MORNING. HIGHS IN THE
LOWER 70S. SOUTHEAST WINDS UP TO 10 MPH.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 40S. SOUTHEAST
WINDS 5 TO 15 MPH.
MONDAY THROUGH TUESDAY
MOSTLY CLEAR. HIGHS IN THE MID 70S.
LOWS IN THE UPPER 40S.
TUESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S.
WEDNESDAY
SUNNY. HIGHS IN THE MID 70S.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S.
THURSDAY
SUNNY. HIGHS IN THE MID 70S.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS AROUND 50. HIGHS
IN THE MID 70S.
TEMPERATURE / PRECIPITATION
HAVRE 48 71 45 74 / 10 10 10 0
MTZ306-191000-
NORTHERN BLAINE COUNTY-
INCLUDING THE CITIES OF CHINOOK, ZURICH, HARLEM, HOGELAND,
AND FORT BELKNAP
1232 AM MDT FRI SEP 18 2026
REST OF TONIGHT
MOSTLY CLOUDY. HIGHS IN THE MID 70S. LOWS IN
THE UPPER 40S. NORTHEAST WINDS UP TO 15 MPH.
SATURDAY
CLOUDY. A 20 PERCENT CHANCE OF RAIN SHOWERS IN THE
AFTERNOON. HIGHS IN THE UPPER 60S. NORTHEAST WINDS 5 TO 15 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS IN THE
EVENING, THEN SLIGHT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. LOWS
IN THE UPPER 40S. EAST WINDS 5 TO 10 MPH. CHANCE OF SHOWERS
50 PERCENT.
SUNDAY
MOSTLY CLOUDY IN THE MORNING THEN BECOMING MOSTLY
SUNNY. HIGHS IN THE UPPER 60S. SOUTHEAST WINDS 5 TO 10 MPH.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S. SOUTHEAST
WINDS 5 TO 15 MPH.
MONDAY
PARTLY SUNNY IN THE MORNING THEN CLEARING. HIGHS IN THE
LOWER 70S.
MONDAY NIGHT AND TUESDAY
MOSTLY CLEAR. LOWS IN THE UPPER 40S.
HIGHS IN THE MID 70S.
TUESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S.
WEDNESDAY
SUNNY. HIGHS IN THE MID 70S.
WEDNESDAY NIGHT THROUGH FRIDAY
PARTLY CLOUDY. LOWS AROUND 50.
HIGHS IN THE UPPER 70S.
MTZ309-191000-
EASTERN PONDERA AND EASTERN TETON-
INCLUDING THE CITIES OF BRADY, CONRAD, AND LEDGER
1232 AM MDT FRI SEP 18 2026
REST OF TONIGHT
MOSTLY CLOUDY. A 20 PERCENT CHANCE OF RAIN
SHOWERS. HIGHS IN THE LOWER 70S. LOWS IN THE UPPER 40S. NORTH
WINDS UP TO 10 MPH.
SATURDAY
CLOUDY WITH A 20 PERCENT CHANCE OF RAIN IN THE
MORNING, THEN PARTLY SUNNY IN THE AFTERNOON. HIGHS IN THE UPPER
60S. NORTHEAST WINDS UP TO 10 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY IN THE EVENING THEN BECOMING
PARTLY CLOUDY. PATCHY FOG AFTER MIDNIGHT. LOWS IN THE MID 40S.
EAST WINDS UP TO 5 MPH SHIFTING TO THE SOUTH AFTER MIDNIGHT.
SUNDAY
SUNNY. PATCHY FOG IN THE MORNING. HIGHS IN THE MID 70S.
SOUTH WINDS UP TO 5 MPH.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 40S. SOUTHEAST
WINDS UP TO 10 MPH.
MONDAY THROUGH TUESDAY
MOSTLY CLEAR. HIGHS IN THE MID 70S.
LOWS IN THE UPPER 40S.
TUESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S.
WEDNESDAY
SUNNY. HIGHS IN THE MID 70S.
WEDNESDAY NIGHT THROUGH FRIDAY
PARTLY CLOUDY. LOWS IN THE
UPPER 40S. HIGHS IN THE MID 70S.
MTZ310-191000-
WESTERN AND CENTRAL CHOUTEAU COUNTY-
INCLUDING THE CITIES OF FLOWEREE, CARTER, AND FORT BENTON
1232 AM MDT FRI SEP 18 2026
REST OF TONIGHT
MOSTLY CLOUDY. A 20 PERCENT CHANCE OF RAIN
SHOWERS. HIGHS IN THE LOWER 70S. LOWS AROUND 50. NORTHEAST WINDS
UP TO 10 MPH.
SATURDAY
MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN IN THE MORNING,
THEN CHANCE OF RAIN SHOWERS IN THE AFTERNOON. HIGHS IN THE UPPER
60S. NORTHEAST WINDS UP TO 10 MPH. CHANCE OF PRECIPITATION
50 PERCENT.
SATURDAY NIGHT
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF RAIN
SHOWERS. PATCHY FOG AFTER MIDNIGHT. LOWS IN THE UPPER 40S.
SOUTHEAST WINDS UP TO 10 MPH.
SUNDAY
MOSTLY SUNNY. PATCHY FOG IN THE MORNING. HIGHS IN THE
LOWER 70S. SOUTHEAST WINDS UP TO 5 MPH.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 40S. SOUTHEAST
WINDS 5 TO 15 MPH.
MONDAY THROUGH TUESDAY
MOSTLY CLEAR. HIGHS IN THE UPPER 70S.
LOWS IN THE LOWER 50S.
TUESDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 50.
WEDNESDAY
SUNNY. HIGHS IN THE MID 70S.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 50.
THURSDAY
SUNNY. HIGHS IN THE UPPER 70S.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS IN THE LOWER
50S. HIGHS IN THE UPPER 70S.
MTZ311-191000-
BEARS PAW MOUNTAINS AND SOUTHERN BLAINE-
INCLUDING THE CITY OF ROCKY BOY
1232 AM MDT FRI SEP 18 2026
REST OF TONIGHT
MOSTLY CLOUDY. HIGHS 70 TO 76. LOWS IN THE
LOWER 50S. NORTHEAST WINDS UP TO 10 MPH.
SATURDAY
CLOUDY. SLIGHT CHANCE OF RAIN IN THE MORNING, THEN
CHANCE OF RAIN SHOWERS IN THE AFTERNOON. HIGHS 63 TO 69.
NORTHEAST WINDS 5 TO 10 MPH. CHANCE OF PRECIPITATION 50 PERCENT.
SATURDAY NIGHT
CLOUDY WITH A 50 PERCENT CHANCE OF RAIN
SHOWERS. LOWS IN THE UPPER 40S. EAST WINDS UP TO 10 MPH.
SUNDAY
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF RAIN SHOWERS
IN THE MORNING, THEN MOSTLY SUNNY IN THE AFTERNOON. HIGHS 64 TO
70. SOUTHEAST WINDS UP TO 10 MPH.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S. SOUTHEAST
WINDS 5 TO 15 MPH.
MONDAY
MOSTLY SUNNY. HIGHS 69 TO 75.
MONDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 50S.
TUESDAY AND TUESDAY NIGHT
PARTLY CLOUDY. HIGHS 72 TO 78. LOWS
IN THE LOWER 50S.
WEDNESDAY THROUGH THURSDAY
MOSTLY CLEAR. HIGHS 72 TO 79. LOWS
IN THE LOWER 50S.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS IN THE LOWER
50S. HIGHS 74 TO 80.
MTZ312-191000-
CASCADE COUNTY BELOW 5000FT-
INCLUDING THE CITY OF GREAT FALLS
1232 AM MDT FRI SEP 18 2026
REST OF TONIGHT
MOSTLY CLOUDY. A 50 PERCENT CHANCE OF RAIN
SHOWERS. HIGHS IN THE LOWER 70S. LOWS AROUND 50. NORTH WINDS UP
TO 10 MPH.
SATURDAY
CLOUDY. CHANCE OF RAIN IN THE MORNING, THEN CHANCE OF
RAIN SHOWERS IN THE AFTERNOON. HIGHS IN THE MID 60S. NORTH WINDS
UP TO 10 MPH. CHANCE OF PRECIPITATION 50 PERCENT.
SATURDAY NIGHT
MOSTLY CLOUDY. A 20 PERCENT CHANCE OF RAIN
SHOWERS IN THE EVENING. PATCHY FOG AFTER MIDNIGHT. LOWS IN THE
UPPER 40S. EAST WINDS UP TO 5 MPH SHIFTING TO THE SOUTH AFTER
MIDNIGHT.
SUNDAY
SUNNY. PATCHY FOG IN THE MORNING. HIGHS IN THE LOWER
70S. SOUTH WINDS UP TO 5 MPH.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 40S. EAST WINDS
UP TO 10 MPH SHIFTING TO THE SOUTH AFTER MIDNIGHT.
MONDAY THROUGH WEDNESDAY
MOSTLY CLEAR. HIGHS IN THE UPPER 70S.
LOWS AROUND 50.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 50.
THURSDAY
SUNNY. HIGHS IN THE UPPER 70S.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS IN THE LOWER
50S. HIGHS IN THE UPPER 70S.
TEMPERATURE / PRECIPITATION
GREAT FALLS ARPT 50 66 47 73 / 40 40 20 0
MTZ313-191000-
JUDITH BASIN COUNTY AND JUDITH GAP-
INCLUDING THE CITIES OF RAYNESFORD, GEYSER, STANFORD, WINDHAM,
BENCHLAND, HOBSON, AND MOCCASIN
1232 AM MDT FRI SEP 18 2026
REST OF TONIGHT
MOSTLY CLOUDY. RAIN SHOWERS LIKELY AND SLIGHT
CHANCE OF THUNDERSTORMS. HIGHS IN THE LOWER 70S. LOWS IN THE
LOWER 50S. NORTHWEST WINDS UP TO 10 MPH. CHANCE OF PRECIPITATION
70 PERCENT.
SATURDAY
COOLER. CHANCE OF RAIN IN THE MORNING, THEN RAIN
SHOWERS LIKELY AND SLIGHT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. HIGHS AROUND 60. NORTH WINDS UP TO 10 MPH WITH GUSTS
TO AROUND 25 MPH. CHANCE OF PRECIPITATION 70 PERCENT.
SATURDAY NIGHT
CLOUDY. RAIN SHOWERS LIKELY AND SLIGHT CHANCE
OF THUNDERSTORMS IN THE EVENING, THEN CHANCE OF RAIN SHOWERS
AFTER MIDNIGHT. PATCHY FOG AFTER MIDNIGHT. LOWS IN THE MID 40S.
NORTH WINDS UP TO 10 MPH SHIFTING TO THE WEST AFTER MIDNIGHT.
CHANCE OF PRECIPITATION 70 PERCENT.
SUNDAY
PARTLY SUNNY. A 20 PERCENT CHANCE OF RAIN SHOWERS IN
THE MORNING. HIGHS IN THE UPPER 60S. SOUTHWEST WINDS UP TO 5 MPH
SHIFTING TO THE NORTHEAST IN THE AFTERNOON.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 40S. SOUTHEAST
WINDS 5 TO 10 MPH SHIFTING TO THE SOUTH AFTER MIDNIGHT.
MONDAY AND MONDAY NIGHT
MOSTLY CLEAR. HIGHS IN THE MID 70S.
LOWS IN THE UPPER 40S.
TUESDAY AND TUESDAY NIGHT
PARTLY CLOUDY. HIGHS IN THE MID 70S.
LOWS IN THE UPPER 40S.
WEDNESDAY THROUGH THURSDAY NIGHT
MOSTLY CLEAR. HIGHS IN THE
MID 70S. LOWS AROUND 50.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 70S.
MTZ314-191000-
FERGUS COUNTY BELOW 4500FT-
INCLUDING THE CITIES OF HILGER AND LEWISTOWN
1232 AM MDT FRI SEP 18 2026
REST OF TONIGHT
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS. HIGHS IN THE MID 70S. LOWS IN THE
LOWER 50S. NORTHEAST WINDS UP TO 10 MPH. CHANCE OF PRECIPITATION
50 PERCENT.
SATURDAY
COOLER, CLOUDY. CHANCE OF RAIN IN THE MORNING, THEN
CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. HIGHS 59 TO 65. NORTHEAST WINDS 5 TO 10 MPH WITH GUSTS
TO AROUND 25 MPH. CHANCE OF PRECIPITATION 50 PERCENT.
SATURDAY NIGHT
CLOUDY. RAIN SHOWERS LIKELY AND SLIGHT CHANCE
OF THUNDERSTORMS IN THE EVENING, THEN CHANCE OF RAIN SHOWERS
AFTER MIDNIGHT. LOWS AROUND 50. NORTHEAST WINDS UP TO 10 MPH.
CHANCE OF PRECIPITATION 70 PERCENT.
SUNDAY
PARTLY SUNNY WITH A 50 PERCENT CHANCE OF RAIN SHOWERS.
HIGHS 63 TO 69. EAST WINDS UP TO 10 MPH.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S. SOUTHEAST
WINDS UP TO 15 MPH.
MONDAY AND MONDAY NIGHT
MOSTLY CLEAR. HIGHS IN THE MID 70S.
LOWS IN THE LOWER 50S.
TUESDAY AND TUESDAY NIGHT
PARTLY CLOUDY. HIGHS IN THE UPPER
70S. LOWS IN THE LOWER 50S.
WEDNESDAY THROUGH THURSDAY NIGHT
MOSTLY CLEAR. HIGHS IN THE
UPPER 70S. LOWS IN THE LOWER 50S.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 70S.
TEMPERATURE / PRECIPITATION
LEWISTOWN 49 59 46 65 / 70 80 80 40
MTZ315-191000-
UPPER BLACKFOOT AND MACDONALD PASS-
INCLUDING THE CITIES OF MARYSVILLE, LINCOLN, FLESHER PASS,
AND MACDONALD PASS
1232 AM MDT FRI SEP 18 2026
REST OF TONIGHT
MOSTLY CLOUDY. RAIN SHOWERS LIKELY AND CHANCE
OF THUNDERSTORMS. HIGHS 61 TO 69. LOWS 44 TO 50. NORTH WINDS UP
TO 10 MPH. CHANCE OF PRECIPITATION 70 PERCENT.
SATURDAY
CLOUDY. PATCHY FOG IN THE MORNING. CHANCE OF RAIN IN
THE MORNING, THEN CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS 52 TO 62. NORTHEAST WINDS
UP TO 10 MPH. CHANCE OF PRECIPITATION 50 PERCENT.
SATURDAY NIGHT
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF RAIN
SHOWERS IN THE EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT. PATCHY
FOG AFTER MIDNIGHT. LOWS IN THE LOWER 40S. NORTH WINDS UP TO
5 MPH SHIFTING TO THE WEST AFTER MIDNIGHT.
SUNDAY
WARMER, SUNNY. PATCHY FOG IN THE MORNING. HIGHS 62 TO
70. WEST WINDS UP TO 5 MPH.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 40S. SOUTHWEST
WINDS UP TO 5 MPH.
MONDAY THROUGH THURSDAY
MOSTLY CLEAR. HIGHS 63 TO 73. LOWS IN
THE MID 40S.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS 45 TO 51. HIGHS
64 TO 72.
MTZ316-191000-
GATES OF THE MOUNTAINS-
INCLUDING THE CITIES OF CANYON CREEK, WOLF CREEK, AND CRAIG
1232 AM MDT FRI SEP 18 2026
REST OF TONIGHT
MOSTLY CLOUDY. RAIN SHOWERS LIKELY AND SLIGHT
CHANCE OF THUNDERSTORMS. HIGHS 67 TO 73. LOWS AROUND 50. NORTH
WINDS UP TO 10 MPH. CHANCE OF PRECIPITATION 70 PERCENT.
SATURDAY
CLOUDY. CHANCE OF RAIN IN THE MORNING, THEN CHANCE OF
RAIN SHOWERS IN THE AFTERNOON. HIGHS 58 TO 64. NORTH WINDS UP TO
10 MPH. CHANCE OF PRECIPITATION 50 PERCENT.
SATURDAY NIGHT
MOSTLY CLOUDY. A 20 PERCENT CHANCE OF RAIN
SHOWERS IN THE EVENING. LOWS IN THE MID 40S. NORTHWEST WINDS UP
TO 5 MPH SHIFTING TO THE SOUTHWEST AFTER MIDNIGHT.
SUNDAY AND SUNDAY NIGHT
MOSTLY CLEAR. HIGHS 68 TO 74. LOWS IN
THE UPPER 40S. SOUTH WINDS UP TO 5 MPH.
MONDAY THROUGH TUESDAY
MOSTLY CLEAR. HIGHS 70 TO 77. LOWS
AROUND 50.
TUESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S.
WEDNESDAY THROUGH THURSDAY NIGHT
MOSTLY CLEAR. HIGHS 70 TO 77.
LOWS IN THE LOWER 50S.
FRIDAY
MOSTLY SUNNY. HIGHS 70 TO 76.
MTZ317-191000-
LITTLE BELT AND HIGHWOOD MOUNTAINS-
INCLUDING THE CITIES OF MONARCH, NEIHART, AND KINGS HILL PASS
1232 AM MDT FRI SEP 18 2026
...FLASH FLOOD WATCH IN EFFECT FROM THIS EVENING THROUGH SATURDAY
EVENING...
REST OF TONIGHT
MOSTLY CLOUDY. RAIN AND SLIGHT CHANCE OF
THUNDERSTORMS. SOME THUNDERSTORMS MAY PRODUCE HEAVY RAINFALL IN
THE EVENING. HIGHS 62 TO 68. LOWS 44 TO 51. NORTHEAST WINDS UP TO
10 MPH WITH GUSTS TO AROUND 25 MPH. CHANCE OF PRECIPITATION
90 PERCENT.
SATURDAY
RAIN LIKELY IN THE MORNING, THEN RAIN SHOWERS LIKELY
AND SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON. SOME
THUNDERSTORMS MAY PRODUCE HEAVY RAINFALL IN THE AFTERNOON. HIGHS
50 TO 58. NORTH WINDS UP TO 10 MPH WITH GUSTS TO AROUND 25 MPH.
CHANCE OF PRECIPITATION 70 PERCENT.
SATURDAY NIGHT
MOSTLY CLOUDY WITH A 50 PERCENT CHANCE OF RAIN
SHOWERS. PATCHY FOG AFTER MIDNIGHT. LOWS 41 TO 47. NORTH WINDS UP
TO 10 MPH SHIFTING TO THE SOUTHWEST AFTER MIDNIGHT.
SUNDAY
WARMER. MOSTLY SUNNY. A 20 PERCENT CHANCE OF RAIN
SHOWERS IN THE AFTERNOON. HIGHS 59 TO 67. SOUTHWEST WINDS UP TO
5 MPH SHIFTING TO THE NORTHWEST IN THE AFTERNOON.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS 41 TO 47. EAST WINDS UP TO
10 MPH SHIFTING TO THE SOUTH AFTER MIDNIGHT.
MONDAY AND MONDAY NIGHT
MOSTLY CLEAR. HIGHS 63 TO 71. LOWS
44 TO 50.
TUESDAY
SUNNY. A 20 PERCENT CHANCE OF RAIN IN THE AFTERNOON.
HIGHS 64 TO 72.
TUESDAY NIGHT THROUGH THURSDAY NIGHT
MOSTLY CLEAR. LOWS 44 TO
52. HIGHS 64 TO 74.
FRIDAY
MOSTLY SUNNY. HIGHS 66 TO 74.
MTZ318-191000-
SNOWY AND JUDITH MOUNTAINS-
1232 AM MDT FRI SEP 18 2026
REST OF TONIGHT
MOSTLY CLOUDY. RAIN AND SLIGHT CHANCE OF
THUNDERSTORMS. HIGHS 64 TO 72. LOWS 46 TO 54. NORTHEAST WINDS UP
TO 10 MPH. CHANCE OF PRECIPITATION 90 PERCENT.
SATURDAY
COOLER. RAIN LIKELY IN THE MORNING, THEN RAIN SHOWERS
AND SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS 50 TO
56. NORTHEAST WINDS 5 TO 10 MPH WITH GUSTS TO AROUND 25 MPH.
CHANCE OF PRECIPITATION 90 PERCENT.
SATURDAY NIGHT
RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS
IN THE EVENING, THEN RAIN SHOWERS LIKELY AFTER MIDNIGHT. LOWS IN
THE MID 40S. NORTH WINDS UP TO 10 MPH. CHANCE OF PRECIPITATION
90 PERCENT.
SUNDAY
MOSTLY CLOUDY. PATCHY FOG IN THE MORNING. RAIN SHOWERS
LIKELY IN THE MORNING, THEN CHANCE OF RAIN SHOWERS IN THE
AFTERNOON. HIGHS 55 TO 61. NORTH WINDS UP TO 10 MPH. CHANCE OF
SHOWERS 70 PERCENT.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 40S. EAST WINDS UP
TO 10 MPH SHIFTING TO THE SOUTH AFTER MIDNIGHT.
MONDAY AND MONDAY NIGHT
MOSTLY CLEAR. HIGHS 62 TO 70. LOWS IN
THE UPPER 40S.
TUESDAY AND TUESDAY NIGHT
PARTLY CLOUDY. HIGHS 66 TO 74. LOWS
IN THE UPPER 40S.
WEDNESDAY THROUGH THURSDAY NIGHT
MOSTLY CLEAR. HIGHS 66 TO 75.
LOWS IN THE UPPER 40S.
FRIDAY
MOSTLY SUNNY. HIGHS 68 TO 76.
MTZ319-191000-
HELENA VALLEY-
INCLUDING THE CITY OF HELENA
1232 AM MDT FRI SEP 18 2026
REST OF TONIGHT
MOSTLY CLOUDY. RAIN SHOWERS AND CHANCE OF
THUNDERSTORMS. HIGHS IN THE MID 70S. LOWS AROUND 50. NORTHWEST
WINDS UP TO 10 MPH. CHANCE OF PRECIPITATION 90 PERCENT.
SATURDAY
COOLER. RAIN LIKELY IN THE MORNING, THEN RAIN SHOWERS
LIKELY AND SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS
IN THE MID 60S. NORTHWEST WINDS UP TO 10 MPH. CHANCE OF
PRECIPITATION 70 PERCENT.
SATURDAY NIGHT
MOSTLY CLOUDY. A 40 PERCENT CHANCE OF RAIN
SHOWERS IN THE EVENING. PATCHY FOG AFTER MIDNIGHT. LOWS IN THE
MID 40S. WEST WINDS UP TO 5 MPH.
SUNDAY
SUNNY. PATCHY FOG IN THE MORNING. HIGHS IN THE MID 70S.
SOUTHWEST WINDS UP TO 5 MPH SHIFTING TO THE EAST IN THE
AFTERNOON.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 40S. SOUTH WINDS
UP TO 5 MPH.
MONDAY THROUGH FRIDAY
MOSTLY CLEAR. HIGHS IN THE UPPER 70S.
LOWS IN THE UPPER 40S.
TEMPERATURE / PRECIPITATION
HELENA 50 64 47 74 / 90 80 30 0
MTZ320-191000-
BIG BELT, BRIDGER AND CASTLE MOUNTAINS-
INCLUDING THE CITIES OF TRIDENT, MAUDLOW, BATTLE RIDGE PASS,
BOZEMAN PASS, AND DEEP CREEK PASS
1232 AM MDT FRI SEP 18 2026
...FLASH FLOOD WATCH IN EFFECT FROM THIS EVENING THROUGH SATURDAY
EVENING...
REST OF TONIGHT
RAIN SHOWERS AND CHANCE OF THUNDERSTORMS. SOME
THUNDERSTORMS MAY PRODUCE HEAVY RAINFALL. HIGHS 61 TO 69. LOWS
46 TO 51. NORTHEAST WINDS UP TO 10 MPH. CHANCE OF PRECIPITATION
NEAR 100 PERCENT.
SATURDAY
PATCHY FOG IN THE MORNING. RAIN SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS IN THE MORNING, THEN RAIN SHOWERS LIKELY
AND SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON. SOME
THUNDERSTORMS MAY PRODUCE HEAVY RAINFALL. HIGHS 49 TO 57. NORTH
WINDS UP TO 10 MPH. CHANCE OF PRECIPITATION NEAR 100 PERCENT.
SATURDAY NIGHT
MOSTLY CLOUDY. RAIN SHOWERS LIKELY AND SLIGHT
CHANCE OF THUNDERSTORMS IN THE EVENING, THEN CHANCE OF RAIN
SHOWERS AFTER MIDNIGHT. PATCHY FOG THROUGH THE NIGHT. SOME
THUNDERSTORMS MAY PRODUCE HEAVY RAINFALL IN THE EVENING. LOWS IN
THE MID 40S. NORTH WINDS UP TO 5 MPH SHIFTING TO THE WEST AFTER
MIDNIGHT. CHANCE OF PRECIPITATION 70 PERCENT.
SUNDAY
WARMER. MOSTLY SUNNY. A 50 PERCENT CHANCE OF RAIN
SHOWERS IN THE MORNING. PATCHY FOG IN THE MORNING. HIGHS 56 TO
66. WEST WINDS UP TO 10 MPH.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 40S. SOUTH WINDS UP
TO 5 MPH.
MONDAY AND MONDAY NIGHT
MOSTLY CLEAR. HIGHS 61 TO 71. LOWS IN
THE MID 40S.
TUESDAY AND TUESDAY NIGHT
PARTLY CLOUDY. HIGHS 63 TO 71. LOWS
IN THE UPPER 40S.
WEDNESDAY THROUGH THURSDAY NIGHT
MOSTLY CLEAR. HIGHS 63 TO 73.
LOWS IN THE UPPER 40S.
FRIDAY
MOSTLY SUNNY. HIGHS 64 TO 72.
MTZ321-191000-
MEAGHER COUNTY VALLEYS-
INCLUDING THE CITIES OF MARTINSDALE, CHECKERBOARD, RINGLING,
AND WHITE SULPHUR SPRINGS
1232 AM MDT FRI SEP 18 2026
REST OF TONIGHT
RAIN SHOWERS AND CHANCE OF THUNDERSTORMS.
PATCHY FOG AFTER MIDNIGHT. HIGHS AROUND 70. LOWS IN THE UPPER
40S. NORTHEAST WINDS UP TO 10 MPH. CHANCE OF PRECIPITATION NEAR
100 PERCENT.
SATURDAY
COOLER. PATCHY FOG IN THE MORNING. RAIN IN THE
MORNING, THEN RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS IN THE UPPER 50S. NORTH WINDS UP TO 10 MPH.
CHANCE OF PRECIPITATION NEAR 100 PERCENT.
SATURDAY NIGHT
MOSTLY CLOUDY. RAIN SHOWERS LIKELY AND SLIGHT
CHANCE OF THUNDERSTORMS IN THE EVENING, THEN CHANCE OF RAIN
SHOWERS AFTER MIDNIGHT. PATCHY FOG THROUGH THE NIGHT. LOWS IN THE
LOWER 40S. NORTH WINDS UP TO 10 MPH SHIFTING TO THE NORTHWEST
AFTER MIDNIGHT. CHANCE OF PRECIPITATION 70 PERCENT.
SUNDAY
PATCHY FOG IN THE MORNING. MOSTLY SUNNY WITH A
20 PERCENT CHANCE OF RAIN SHOWERS. HIGHS IN THE MID 60S. WEST
WINDS UP TO 10 MPH.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 40S. SOUTHEAST
WINDS UP TO 10 MPH.
MONDAY AND MONDAY NIGHT
MOSTLY CLEAR. HIGHS AROUND 70. LOWS IN
THE MID 40S.
TUESDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 70S.
TUESDAY NIGHT THROUGH FRIDAY
MOSTLY CLEAR. LOWS IN THE MID
40S. HIGHS IN THE LOWER 70S.
MTZ322-191000-
ELKHORN AND BOULDER MOUNTAINS-
INCLUDING THE CITIES OF MONTANA CITY, CLANCY, BOULDER, CORBIN,
WICKES, ELK PARK PASS, AND HOMESTAKE PASS
1232 AM MDT FRI SEP 18 2026
...FLASH FLOOD WATCH IN EFFECT FROM THIS EVENING THROUGH SATURDAY
EVENING...
REST OF TONIGHT
RAIN SHOWERS AND CHANCE OF THUNDERSTORMS. SOME
THUNDERSTORMS MAY PRODUCE HEAVY RAINFALL. HIGHS 59 TO 67. LOWS
43 TO 51. NORTH WINDS UP TO 10 MPH. CHANCE OF PRECIPITATION NEAR
100 PERCENT.
SATURDAY
RAIN IN THE MORNING, THEN RAIN SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS IN THE AFTERNOON. SOME THUNDERSTORMS MAY
PRODUCE HEAVY RAINFALL IN THE AFTERNOON. HIGHS 48 TO 56. NORTH
WINDS UP TO 10 MPH. CHANCE OF PRECIPITATION NEAR 100 PERCENT.
SATURDAY NIGHT
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS IN THE
EVENING, THEN SLIGHT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT.
PATCHY FOG THROUGH THE NIGHT. LOWS 38 TO 46. NORTHWEST WINDS UP
TO 5 MPH. CHANCE OF SHOWERS 50 PERCENT.
SUNDAY
WARMER. MOSTLY SUNNY. PATCHY FOG IN THE MORNING. HIGHS
59 TO 67. WEST WINDS UP TO 5 MPH.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS 40 TO 46. SOUTH WINDS UP TO
5 MPH SHIFTING TO THE SOUTHWEST AFTER MIDNIGHT.
MONDAY AND MONDAY NIGHT
MOSTLY CLEAR. HIGHS 62 TO 70. LOWS
43 TO 49.
TUESDAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF RAIN IN THE
AFTERNOON. HIGHS 63 TO 71.
TUESDAY NIGHT
PARTLY CLOUDY. LOWS 42 TO 48.
WEDNESDAY THROUGH THURSDAY NIGHT
MOSTLY CLEAR. HIGHS 63 TO 73.
LOWS 42 TO 50.
FRIDAY
MOSTLY SUNNY. HIGHS 64 TO 72.
MTZ323-191000-
CANYON FERRY AREA-
INCLUDING THE CITIES OF TOSTON, TOWNSEND, AND WINSTON
1232 AM MDT FRI SEP 18 2026
REST OF TONIGHT
MOSTLY CLOUDY. RAIN SHOWERS AND CHANCE OF
THUNDERSTORMS. HIGHS IN THE LOWER 70S. LOWS 49 TO 54. NORTH WINDS
UP TO 10 MPH. CHANCE OF PRECIPITATION 90 PERCENT.
SATURDAY
RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN
THE MORNING, THEN RAIN SHOWERS LIKELY AND SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS 57 TO 63. NORTH WINDS UP TO
10 MPH. CHANCE OF PRECIPITATION 90 PERCENT.
SATURDAY NIGHT
MOSTLY CLOUDY. RAIN SHOWERS LIKELY AND SLIGHT
CHANCE OF THUNDERSTORMS IN THE EVENING, THEN CHANCE OF RAIN
SHOWERS AFTER MIDNIGHT. PATCHY FOG THROUGH THE NIGHT. LOWS IN THE
UPPER 40S. NORTHWEST WINDS UP TO 5 MPH. CHANCE OF PRECIPITATION
70 PERCENT.
SUNDAY
PARTLY SUNNY IN THE MORNING THEN CLEARING. PATCHY FOG
IN THE MORNING. HIGHS IN THE UPPER 60S. SOUTH WINDS UP TO 5 MPH.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS 44 TO 50. SOUTH WINDS UP TO
5 MPH.
MONDAY AND MONDAY NIGHT
MOSTLY CLEAR. HIGHS IN THE MID 70S.
LOWS 46 TO 52.
TUESDAY
MOSTLY SUNNY. HIGHS IN THE MID 70S.
TUESDAY NIGHT THROUGH FRIDAY
MOSTLY CLEAR. LOWS 45 TO 52.
HIGHS IN THE MID 70S.
MTZ324-191000-
MISSOURI HEADWATERS-
INCLUDING THE CITIES OF HARRISON, THREE FORKS, WILLOW CREEK,
PONY, AND WHITEHALL
1232 AM MDT FRI SEP 18 2026
REST OF TONIGHT
MOSTLY CLOUDY WITH RAIN SHOWERS AND CHANCE OF
THUNDERSTORMS. PATCHY FOG IN THE LATE EVENING AND OVERNIGHT.
HIGHS AROUND 70. LOWS AROUND 50. NORTH WINDS UP TO 5 MPH WITH
GUSTS TO AROUND 20 MPH. CHANCE OF PRECIPITATION 90 PERCENT.
SATURDAY
COOLER. PATCHY FOG IN THE MORNING. RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE MORNING, THEN RAIN SHOWERS
AND CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE UPPER
50S. NORTH WINDS UP TO 5 MPH WITH GUSTS TO AROUND 20 MPH. CHANCE
OF PRECIPITATION 90 PERCENT.
SATURDAY NIGHT
MOSTLY CLOUDY. RAIN SHOWERS LIKELY AND SLIGHT
CHANCE OF THUNDERSTORMS IN THE EVENING, THEN CHANCE OF RAIN
SHOWERS AFTER MIDNIGHT. PATCHY FOG THROUGH THE NIGHT. LOWS IN THE
MID 40S. NORTH WINDS UP TO 5 MPH SHIFTING TO THE WEST AFTER
MIDNIGHT. CHANCE OF PRECIPITATION 70 PERCENT.
SUNDAY
PARTLY SUNNY IN THE MORNING THEN CLEARING. PATCHY FOG
IN THE MORNING. HIGHS IN THE UPPER 60S. WEST WINDS UP TO 5 MPH
SHIFTING TO THE SOUTH IN THE AFTERNOON.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 40S. SOUTHEAST
WINDS UP TO 5 MPH SHIFTING TO THE SOUTHWEST AFTER MIDNIGHT.
MONDAY AND MONDAY NIGHT
MOSTLY CLEAR. HIGHS IN THE LOWER 70S.
LOWS IN THE UPPER 40S.
TUESDAY AND TUESDAY NIGHT
PARTLY CLOUDY. HIGHS IN THE MID 70S.
LOWS IN THE UPPER 40S.
WEDNESDAY THROUGH FRIDAY
MOSTLY CLEAR. HIGHS IN THE MID 70S.
LOWS IN THE UPPER 40S.
MTZ325-191000-
MADISON RIVER VALLEY-
INCLUDING THE CITIES OF CAMERON, ENNIS, JEFFERS, MCALLISTER,
AND NORRIS
1232 AM MDT FRI SEP 18 2026
REST OF TONIGHT
RAIN SHOWERS AND CHANCE OF THUNDERSTORMS.
PATCHY FOG IN THE LATE EVENING AND OVERNIGHT. HIGHS IN THE UPPER
60S. LOWS 45 TO 52. NORTH WINDS UP TO 10 MPH. CHANCE OF
PRECIPITATION 90 PERCENT.
SATURDAY
COOLER. PATCHY FOG IN THE MORNING. RAIN SHOWERS
LIKELY AND SLIGHT CHANCE OF THUNDERSTORMS IN THE MORNING, THEN
RAIN SHOWERS AND CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS
IN THE UPPER 50S. NORTHWEST WINDS UP TO 5 MPH. CHANCE OF
PRECIPITATION 90 PERCENT.
SATURDAY NIGHT
RAIN SHOWERS LIKELY AND SLIGHT CHANCE OF
THUNDERSTORMS IN THE EVENING, THEN RAIN SHOWERS LIKELY AFTER
MIDNIGHT. PATCHY FOG AFTER MIDNIGHT. LOWS IN THE MID 40S.
NORTHWEST WINDS UP TO 10 MPH. CHANCE OF PRECIPITATION 70 PERCENT.
SUNDAY
MOSTLY CLOUDY IN THE MORNING THEN BECOMING MOSTLY
SUNNY. PATCHY FOG IN THE MORNING. A 20 PERCENT CHANCE OF RAIN
SHOWERS. HIGHS IN THE UPPER 60S. SOUTHWEST WINDS UP TO 5 MPH
SHIFTING TO THE NORTHWEST IN THE AFTERNOON.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS 40 TO 46. NORTHEAST WINDS UP
TO 5 MPH SHIFTING TO THE SOUTH AFTER MIDNIGHT.
MONDAY
SUNNY. HIGHS IN THE LOWER 70S.
MONDAY NIGHT THROUGH TUESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE
MID 40S. HIGHS IN THE LOWER 70S.
WEDNESDAY THROUGH THURSDAY NIGHT
MOSTLY CLEAR. HIGHS IN THE
MID 70S. LOWS IN THE UPPER 40S.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE MID 70S.
MTZ326-191000-
GALLATIN VALLEY-
INCLUDING THE CITIES OF BOZEMAN AND GALLATIN GATEWAY
1232 AM MDT FRI SEP 18 2026
...FLASH FLOOD WATCH IN EFFECT FROM THIS EVENING THROUGH SATURDAY
EVENING...
REST OF TONIGHT
RAIN SHOWERS AND CHANCE OF THUNDERSTORMS.
PATCHY FOG IN THE LATE EVENING AND OVERNIGHT. SOME THUNDERSTORMS
MAY PRODUCE HEAVY RAINFALL. HIGHS AROUND 70. LOWS AROUND 50.
NORTH WINDS UP TO 5 MPH. CHANCE OF PRECIPITATION 90 PERCENT.
SATURDAY
COOLER. PATCHY FOG IN THE MORNING. RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE MORNING, THEN RAIN SHOWERS
AND CHANCE OF THUNDERSTORMS IN THE AFTERNOON. SOME THUNDERSTORMS
MAY PRODUCE HEAVY RAINFALL IN THE MORNING. SOME THUNDERSTORMS MAY
PRODUCE HEAVY RAINFALL IN THE AFTERNOON. HIGHS IN THE UPPER 50S.
NORTHWEST WINDS UP TO 5 MPH. CHANCE OF PRECIPITATION 90 PERCENT.
SATURDAY NIGHT
MOSTLY CLOUDY. RAIN SHOWERS LIKELY AND SLIGHT
CHANCE OF THUNDERSTORMS IN THE EVENING, THEN CHANCE OF RAIN
SHOWERS AFTER MIDNIGHT. PATCHY FOG THROUGH THE NIGHT. SOME
THUNDERSTORMS MAY PRODUCE HEAVY RAINFALL IN THE EVENING. LOWS IN
THE MID 40S. NORTHWEST WINDS UP TO 5 MPH IN THE EVENING BECOMING
LIGHT. CHANCE OF PRECIPITATION 70 PERCENT.
SUNDAY
PATCHY FOG IN THE MORNING. MOSTLY CLOUDY WITH A
20 PERCENT CHANCE OF RAIN SHOWERS IN THE MORNING, THEN MOSTLY
SUNNY IN THE AFTERNOON. HIGHS IN THE UPPER 60S. SOUTHWEST WINDS
UP TO 5 MPH SHIFTING TO THE WEST IN THE AFTERNOON.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 40S. SOUTHEAST
WINDS UP TO 5 MPH.
MONDAY AND MONDAY NIGHT
MOSTLY CLEAR. HIGHS IN THE LOWER 70S.
LOWS IN THE MID 40S.
TUESDAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF RAIN IN THE
AFTERNOON. HIGHS IN THE MID 70S.
TUESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 40S.
WEDNESDAY THROUGH THURSDAY NIGHT
MOSTLY CLEAR. HIGHS IN THE
MID 70S. LOWS IN THE UPPER 40S.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE MID 70S.
TEMPERATURE / PRECIPITATION
BOZEMAN AIRPORT 47 59 42 68 / 90 90 70 20
BOZEMAN MSU 49 57 45 65 / 90 90 70 30
MTZ330-191000-
GALLATIN AND MADISON COUNTY MOUNTAINS AND CENTENNIAL MOUNTAINS-
INCLUDING THE CITIES OF BIG SKY, WEST YELLOWSTONE, TARGHEE PASS,
AND RAYNOLDS PASS
1232 AM MDT FRI SEP 18 2026
REST OF TONIGHT
RAIN SHOWERS LIKELY AND CHANCE OF
THUNDERSTORMS. PATCHY FOG AFTER MIDNIGHT. HIGHS 54 TO 64. LOWS
39 TO 48. NORTHEAST WINDS UP TO 10 MPH. CHANCE OF PRECIPITATION
70 PERCENT.
SATURDAY
PATCHY FOG IN THE MORNING. RAIN SHOWERS LIKELY AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE MORNING, THEN RAIN SHOWERS
AND CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS 44 TO 54.
SOUTH WINDS UP TO 5 MPH SHIFTING TO THE WEST IN THE AFTERNOON.
CHANCE OF PRECIPITATION NEAR 100 PERCENT.
SATURDAY NIGHT
MOSTLY CLOUDY. RAIN SHOWERS LIKELY AND SLIGHT
CHANCE OF THUNDERSTORMS IN THE EVENING, THEN CHANCE OF RAIN
SHOWERS AFTER MIDNIGHT. PATCHY FOG AFTER MIDNIGHT. LOWS 37 TO 43.
NORTHWEST WINDS UP TO 10 MPH. CHANCE OF PRECIPITATION 70 PERCENT.
SUNDAY
NOT AS COOL. PATCHY FOG IN THE MORNING. MOSTLY CLOUDY
WITH SLIGHT CHANCE OF RAIN SHOWERS IN THE MORNING, THEN MOSTLY
SUNNY WITH CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS 51 TO 61. NORTHWEST WINDS
UP TO 10 MPH. CHANCE OF PRECIPITATION 50 PERCENT.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS 36 TO 42. NORTHWEST WINDS UP
TO 10 MPH SHIFTING TO THE SOUTH AFTER MIDNIGHT.
MONDAY
WARMER, SUNNY. HIGHS 57 TO 67.
MONDAY NIGHT
PARTLY CLOUDY. LOWS 39 TO 45.
TUESDAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF RAIN IN THE
AFTERNOON. HIGHS 58 TO 68.
TUESDAY NIGHT
PARTLY CLOUDY. LOWS 39 TO 45.
WEDNESDAY THROUGH THURSDAY NIGHT
MOSTLY CLEAR. HIGHS 59 TO 70.
LOWS 39 TO 47.
FRIDAY
MOSTLY SUNNY. HIGHS 60 TO 70.
TEMPERATURE / PRECIPITATION
WEST YELLOWSTONE 38 57 34 62 / 90 70 50 30
MTZ327-191000-
NORTHWEST BEAVERHEAD COUNTY-
INCLUDING THE CITIES OF DEWEY, WISDOM, WISE RIVER, BIG HOLE PASS,
AND CHIEF JOSEPH PASS
1232 AM MDT FRI SEP 18 2026
...FLASH FLOOD WATCH IN EFFECT FROM THIS AFTERNOON THROUGH
SATURDAY AFTERNOON...
REST OF TONIGHT
RAIN SHOWERS AND CHANCE OF THUNDERSTORMS.
PATCHY FOG EARLY IN THE MORNING. SOME THUNDERSTORMS MAY PRODUCE
HEAVY RAINFALL. HIGHS 53 TO 63. LOWS 39 TO 45. NORTH WINDS UP TO
10 MPH. CHANCE OF PRECIPITATION NEAR 100 PERCENT.
SATURDAY
PATCHY FOG IN THE MORNING. RAIN LIKELY IN THE
MORNING, THEN RAIN SHOWERS AND CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. SOME THUNDERSTORMS MAY PRODUCE HEAVY RAINFALL IN THE
AFTERNOON. HIGHS 46 TO 54. NORTH WINDS UP TO 10 MPH. CHANCE OF
PRECIPITATION 90 PERCENT.
SATURDAY NIGHT
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING. PATCHY FOG THROUGH
THE NIGHT. LOWS IN THE UPPER 30S. NORTHWEST WINDS UP TO 10 MPH.
CHANCE OF PRECIPITATION 50 PERCENT.
SUNDAY
WARMER. MOSTLY SUNNY. PATCHY FOG IN THE MORNING. HIGHS
56 TO 66. WEST WINDS UP TO 5 MPH.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 40. NORTHWEST WINDS UP
TO 5 MPH SHIFTING TO THE SOUTH AFTER MIDNIGHT.
MONDAY
SUNNY. HIGHS 59 TO 69.
MONDAY NIGHT
PARTLY CLOUDY. LOWS 38 TO 44.
TUESDAY
SUNNY. HIGHS 58 TO 68.
TUESDAY NIGHT
PARTLY CLOUDY. LOWS 37 TO 43.
WEDNESDAY THROUGH THURSDAY
MOSTLY CLEAR. HIGHS 59 TO 71. LOWS
37 TO 43.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS 39 TO 45.
FRIDAY
SUNNY. HIGHS 60 TO 70.
MTZ328-191000-
BEAVERHEAD AND WESTERN MADISON BELOW 6000FT-
INCLUDING THE CITIES OF BANNACK, DILLON, GLEN, AND WATERLOO
1232 AM MDT FRI SEP 18 2026
REST OF TONIGHT
RAIN SHOWERS LIKELY AND CHANCE OF
THUNDERSTORMS. PATCHY FOG EARLY IN THE MORNING. HIGHS 63 TO 69.
LOWS 45 TO 50. NORTHWEST WINDS UP TO 10 MPH. CHANCE OF
PRECIPITATION 70 PERCENT.
SATURDAY
PATCHY FOG IN THE MORNING. RAIN SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS IN THE MORNING, THEN RAIN SHOWERS AND
CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS 55 TO 61. NORTH
WINDS UP TO 10 MPH. CHANCE OF PRECIPITATION 90 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. PATCHY FOG AFTER MIDNIGHT. LOWS
IN THE LOWER 40S. NORTH WINDS UP TO 10 MPH SHIFTING TO THE WEST
AFTER MIDNIGHT. CHANCE OF PRECIPITATION 50 PERCENT.
SUNDAY
WARMER. PARTLY SUNNY IN THE MORNING THEN CLEARING.
PATCHY FOG IN THE MORNING. HIGHS 63 TO 69. WEST WINDS UP TO
5 MPH.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 40S. NORTHEAST
WINDS UP TO 5 MPH SHIFTING TO THE SOUTH AFTER MIDNIGHT.
MONDAY
SUNNY. HIGHS 68 TO 74.
MONDAY NIGHT THROUGH TUESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE
MID 40S. HIGHS 69 TO 75.
WEDNESDAY THROUGH THURSDAY
MOSTLY CLEAR. HIGHS 70 TO 77. LOWS
IN THE MID 40S.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 40S.
FRIDAY
SUNNY. HIGHS 70 TO 76.
TEMPERATURE / PRECIPITATION
DILLON 46 60 43 67 / 80 90 60 10
MTZ329-191000-
RUBY MOUNTAINS AND SOUTHERN BEAVERHEAD MOUNTAINS-
INCLUDING THE CITY OF MONIDA PASS
1232 AM MDT FRI SEP 18 2026
REST OF TONIGHT
RAIN SHOWERS LIKELY AND CHANCE OF
THUNDERSTORMS. PATCHY FOG EARLY IN THE MORNING. HIGHS 55 TO 63.
LOWS 41 TO 47. NORTHWEST WINDS UP TO 10 MPH. CHANCE OF
PRECIPITATION 70 PERCENT.
SATURDAY
PATCHY FOG IN THE MORNING. CHANCE OF RAIN IN THE
MORNING, THEN RAIN SHOWERS LIKELY AND CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS 47 TO 55. SOUTHWEST WINDS UP TO 10 MPH
SHIFTING TO THE NORTHWEST IN THE AFTERNOON. CHANCE OF
PRECIPITATION 70 PERCENT.
SATURDAY NIGHT
MOSTLY CLOUDY. RAIN SHOWERS LIKELY AND SLIGHT
CHANCE OF THUNDERSTORMS IN THE EVENING, THEN SLIGHT CHANCE OF
RAIN SHOWERS AFTER MIDNIGHT. LOWS IN THE LOWER 40S. NORTHWEST
WINDS UP TO 10 MPH. CHANCE OF PRECIPITATION 70 PERCENT.
SUNDAY
NOT AS COOL. MOSTLY SUNNY. PATCHY FOG IN THE MORNING.
HIGHS 55 TO 63. NORTHWEST WINDS UP TO 10 MPH.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 40S. NORTHEAST
WINDS UP TO 10 MPH SHIFTING TO THE SOUTH AFTER MIDNIGHT.
MONDAY
SUNNY. HIGHS 59 TO 67.
MONDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 40S.
TUESDAY
MOSTLY SUNNY. A 20 PERCENT CHANCE OF RAIN IN THE
AFTERNOON. HIGHS 60 TO 68.
TUESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 40S.
WEDNESDAY THROUGH THURSDAY
MOSTLY CLEAR. HIGHS 61 TO 71. LOWS
IN THE LOWER 40S.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS IN THE MID 40S.
HIGHS 62 TO 70.
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