016
FPUS65 KTFX 171000
SFPMT
STATE FORECAST FOR MONTANA
NATIONAL WEATHER SERVICE GREAT FALLS MT
400 AM MDT SUN MAY 17 2026
MTZ001>007-043-172200-
WEST OF THE CONTINENTAL DIVIDE-
NATIONAL WEATHER SERVICE MISSOULA MT
400 AM MDT SUN MAY 17 2026
...WINTER WEATHER ADVISORY IN EFFECT UNTIL MIDNIGHT MDT TONIGHT
FOR WEST GLACIER REGION...BITTERROOT/SAPPHIRE
MOUNTAINS...BUTTE/BLACKFOOT REGION...POTOMAC/SEELEY LAKE
REGION...
...FROST ADVISORY IN EFFECT UNTIL 9 AM MDT THIS MORNING FOR
FLATHEAD/MISSION VALLEYS...MISSOULA/BITTERROOT VALLEYS...
...FROST ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO 9 AM MDT
MONDAY FOR FLATHEAD/MISSION VALLEYS...MISSOULA/BITTERROOT
VALLEYS...
TODAY
MOSTLY CLOUDY WITH RAIN SHOWERS, SNOW SHOWERS LIKELY AND
A SLIGHT CHANCE OF THUNDERSTORMS. HIGHS IN THE UPPER 40S TO MID
50S.
TONIGHT
PARTLY CLOUDY WITH A CHANCE OF RAIN AND SNOW.
WIDESPREAD FROST. LOWS IN THE MID 20S TO LOWER 30S.
MONDAY
PARTLY CLOUDY. WIDESPREAD FROST IN THE MORNING. HIGHS
IN THE MID 50S TO LOWER 60S.
TUESDAY
PARTLY CLOUDY. CHANCE OF RAIN SHOWERS. WIDESPREAD
FROST. LOWS IN THE UPPER 20S TO MID 30S. HIGHS IN THE UPPER 50S
TO MID 60S.
WEDNESDAY
MOSTLY CLOUDY WITH A CHANCE OF RAIN SHOWERS. LOWS IN
THE 30S. HIGHS IN THE 60S.
THURSDAY
PARTLY CLOUDY WITH A CHANCE OF RAIN SHOWERS. LOWS IN
THE 30S. HIGHS IN THE MID 60S TO LOWER 70S.
MTZ301>314-316>318-172200-
CENTRAL MONTANA-
NATIONAL WEATHER SERVICE GREAT FALLS MT
400 AM MDT SUN MAY 17 2026
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT
TONIGHT FOR EAST GLACIER PARK REGION...SOUTHERN ROCKY MOUNTAIN
FRONT...LITTLE BELT AND HIGHWOOD MOUNTAINS...
TODAY
RAIN AND SNOW LIKELY IN THE MORNING, THEN RAIN AND SNOW
LIKELY IN THE AFTERNOON. HIGHS 40 TO 45...30 TO 40 IN THE
MOUNTAINS. NORTHWEST WINDS 20 TO 30 MPH WITH GUSTS TO 35 MPH.
TONIGHT
MOSTLY CLOUDY. CHANCE OF RAIN AND SNOW. LOWS 25 TO
30...20 TO 25 IN THE MOUNTAINS.
MONDAY
MOSTLY CLOUDY IN THE MORNING THEN BECOMING PARTLY
CLOUDY. HIGHS 45 TO 55...35 TO 45 IN THE MOUNTAINS.
TUESDAY
PARTLY CLOUDY. LOWS 25 TO 30. HIGHS 55 TO 65.
WEDNESDAY
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS. LOWS 35 TO 40. HIGHS 55 TO 65.
THURSDAY
PARTLY CLOUDY. LOWS 35 TO 40. HIGHS 60 TO 70.
MTZ315-319>330-172200-
SOUTHWEST MONTANA-
NATIONAL WEATHER SERVICE GREAT FALLS MT
400 AM MDT SUN MAY 17 2026
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT
TONIGHT FOR UPPER BLACKFOOT AND MACDONALD PASS...BIG BELT,
BRIDGER AND CASTLE MOUNTAINS...ELKHORN AND BOULDER MOUNTAINS...
...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 AM MDT EARLY THIS
MORNING FOR MADISON RIVER VALLEY...GALLATIN VALLEY...
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MDT EARLY
THIS MORNING FOR GALLATIN AND MADISON COUNTY MOUNTAINS AND
CENTENNIAL MOUNTAINS...
TODAY
MOSTLY CLOUDY. CHANCE OF SNOW IN THE MORNING, THEN
CHANCE OF SNOW SHOWERS, RAIN SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS 35 TO 45...30 TO 35 IN THE
MOUNTAINS. NORTH WINDS 20 TO 25 MPH WITH GUSTS TO 35 MPH IN THE
AFTERNOON.
TONIGHT
MOSTLY CLOUDY. CHANCE OF SNOW THROUGH THE NIGHT. LOWS
25 TO 30...20 TO 25 IN THE MOUNTAINS. NORTH WINDS 20 TO 25 MPH IN
THE EVENING. GUSTS UP TO 40 MPH.
MONDAY
MOSTLY CLOUDY IN THE MORNING THEN BECOMING PARTLY
CLOUDY. HIGHS 45 TO 55...35 TO 45 IN THE MOUNTAINS. GUSTS UP TO
35 MPH IN THE MORNING.
TUESDAY
PARTLY CLOUDY. LOWS 20 TO 30. HIGHS 50 TO 60.
WEDNESDAY
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS, SLIGHT CHANCE
OF THUNDERSTORMS AND SNOW. LOWS 30 TO 35. HIGHS 50 TO 60.
THURSDAY
PARTLY CLOUDY. LOWS 30 TO 35. HIGHS 55 TO 65.
MTZ016>027-059>062-172200-
NORTHEAST MONTANA-
NATIONAL WEATHER SERVICE GLASGOW MT
400 AM MDT SUN MAY 17 2026
TODAY
MOSTLY CLOUDY WITH A CHANCE OF RAIN SHOWERS. HIGHS IN
THE UPPER 40S TO MID 50S.
TONIGHT
MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS IN THE
EVENING, THEN A CHANCE OF RAIN AND SNOW SHOWERS AFTER MIDNIGHT.
LOWS IN THE LOWER TO MID 30S.
MONDAY
CLOUDY. A SLIGHT CHANCE OF RAIN AND SNOW SHOWERS IN THE
MORNING, THEN A SLIGHT CHANCE OF RAIN SHOWERS IN THE AFTERNOON
AND EVENING. HIGHS IN THE MID TO UPPER 40S.
TUESDAY
PARTLY CLOUDY. HIGHS NEAR 60. LOWS NEAR 30.
WEDNESDAY
MOSTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. HIGHS IN THE MID TO UPPER 60S. LOWS IN THE MID 30S
TO LOWER 40S.
THURSDAY
PARTLY CLOUDY. HIGHS IN THE MID 60S TO LOWER 70S.
LOWS NEAR 40.
MTZ028>042-056>058-063>068-172200-
SOUTH CENTRAL AND SOUTHEAST MONTANA-
NATIONAL WEATHER SERVICE BILLINGS MT
400 AM MDT SUN MAY 17 2026
...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO NOON
MDT MONDAY FOR PORTIONS OF SOUTH CENTRAL MONTANA...
TODAY
PARTLY SUNNY. SLIGHT CHANCE OF SNOW SHOWERS. HIGHS IN
THE UPPER 40S TO THE UPPER 50S.
TONIGHT
MOSTLY CLOUDY. PATCHY BLOWING SNOW. CHANCE OF SNOW
SHOWERS AND SLIGHT CHANCE OF RAIN SHOWERS. LOWS IN THE UPPER 20S
TO THE UPPER 30S.
MONDAY
CLOUDY. PATCHY BLOWING SNOW. CHANCE OF SNOW SHOWERS AND
SLIGHT CHANCE OF RAIN SHOWERS. HIGHS IN THE LOWER 40S TO THE
LOWER 50S.
MONDAY NIGHT
MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS.
LOWS IN THE MID 20S TO LOWER 30S.
TUESDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 50S TO THE UPPER 60S.
TUESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 30S TO THE
LOWER 40S.
WEDNESDAY AND WEDNESDAY NIGHT
MOSTLY CLOUDY. CHANCE OF RAIN
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE MID 30S
TO THE MID 40S. HIGHS IN THE LOWER 60S TO THE LOWER 70S.
THURSDAY
MOSTLY SUNNY. SLIGHT CHANCE OF THUNDERSTORMS. HIGHS
IN THE MID 60S TO LOWER 70S.
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