Montana Weather General Forecast

043
FPUS65 KTFX 121000
SFPMT

State Forecast For Montana
National Weather Service Great Falls MT
400 AM MDT Tue May 12 2026

MTZ001.007-043-122200-
West of the Continental Divide-
National Weather Service Missoula MT
400 AM MDT Tue May 12 2026

.TODAY...Mostly sunny. Highs in the 80s.
.TONIGHT...Partly cloudy. Lows in the mid 40s to lower 50s.
.WEDNESDAY...Mostly cloudy. Rain likely in the afternoon and
evening. Highs in the 70s to lower 80s.
.THURSDAY...Partly cloudy. A chance of rain. Lows in the mid 30s
to lower 40s. Highs in the upper 50s to mid 60s.
.FRIDAY...Partly cloudy with a chance of rain. Lows in the 30s to
lower 40s. Highs in the 60s to lower 70s.
.SATURDAY...Mostly cloudy. Lows in the 30s. Highs in the 50s.

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MTZ301.314-316.318-122200-
Central Montana-
National Weather Service Great Falls MT
400 AM MDT Tue May 12 2026

...HIGH WIND WATCH IN EFFECT FROM LATE WEDNESDAY NIGHT THROUGH
THURSDAY EVENING FOR East Glacier Park Region...Northern High
Plains...Eastern Glacier, Western Toole, and Central
Pondera...Hill County...Northern Blaine County...Southern Rocky
Mountain Front...Southern High Plains...Western and Central
Chouteau County...Bears Paw Mountains and Southern
Blaine...Fergus County below 4500ft...Snowy and Judith
Mountains...
...HIGH WIND WATCH IN EFFECT FROM LATE WEDNESDAY NIGHT THROUGH
THURSDAY AFTERNOON FOR Eastern Toole and Liberty...Cascade County
below 5000ft...Judith Basin County and Judith Gap...

.TODAY...Sunny. Highs 75 to 80...60 to 70 in the mountains.
.TONIGHT...Partly cloudy. Lows 45 to 50.
.WEDNESDAY...Mostly cloudy. Rain showers likely and slight chance
of thunderstorms in the afternoon and evening. Highs 80 to 90...
65 to 75 in the mountains. Southwest winds 20 to 30 mph with
gusts to 45 mph in the afternoon and evening.
.THURSDAY...Partly cloudy. Cooler. Chance of rain showers. Lows
40 to 50. Highs 60 to 70.
.FRIDAY...Mostly clear. Lows 40 to 45. Highs 60 to 70.
.SATURDAY...Mostly cloudy. Slight chance of rain. Lows 35 to 45.
Highs 50 to 60.
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MTZ315-319.330-122200-
Southwest Montana-
National Weather Service Great Falls MT
400 AM MDT Tue May 12 2026

...HIGH WIND WATCH IN EFFECT FROM LATE WEDNESDAY NIGHT THROUGH
THURSDAY EVENING FOR Upper Blackfoot and MacDonald Pass...
...HIGH WIND WATCH IN EFFECT FROM LATE WEDNESDAY NIGHT THROUGH
THURSDAY AFTERNOON FOR Helena Valley...

.TODAY...Sunny. Highs 75 to 85...65 to 75 in the mountains.
.TONIGHT...Partly cloudy. Lows 45 to 50.
.WEDNESDAY...Increasing clouds. Chance of rain showers and slight
chance of thunderstorms in the afternoon and evening. Highs 75 to
85...65 to 75 in the mountains. Southwest winds 25 to 35 mph with
gusts to 50 mph in the afternoon and evening.
.THURSDAY...Mostly clear. Cooler. Chance of rain and snow
showers. Lows 30 to 40. Highs 55 to 65.
.FRIDAY...Mostly clear. Lows 35 to 40. Highs 60 to 70.
.SATURDAY...Mostly cloudy. Slight chance of snow. Lows 35 to 40.
Highs 50 to 60.
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MTZ016.027-059.062-122200-
Northeast Montana-
National Weather Service Glasgow MT
400 AM MDT Tue May 12 2026

...HIGH WIND WATCH IN EFFECT FROM THURSDAY MORNING THROUGH
THURSDAY EVENING...

.TODAY...Sunny. Highs in the 70s.
.TONIGHT...Mostly clear. Lows in the 40s.
.WEDNESDAY...Partly cloudy. A chance of rain showers in the
afternoon and evening. Highs in the mid 80s to lower 90s.
.THURSDAY...Mostly cloudy with a slight chance of showers. Highs
near 70. Lows in the lower to mid 50s.
.FRIDAY...Mostly clear. Highs near 70. Lows in the mid 40s to
lower 50s.
.SATURDAY...Mostly cloudy with a slight chance of rain showers.
Highs in the mid 60s to lower 70s. Lows in the lower to mid 40s.

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MTZ028.042-056.058-063.068-122200-
South Central and Southeast Montana-
National Weather Service Billings MT
400 AM MDT Tue May 12 2026

.TODAY...Sunny. Highs in the 70s.
.TONIGHT...Mostly clear. Lows in the lower 40s to the lower 50s.
.WEDNESDAY...Mostly sunny. Highs in the mid 80s to the mid 90s.
.WEDNESDAY NIGHT...Mostly cloudy. Slight chance of rain showers.
Lows in the upper 40s to the upper 50s.
.THURSDAY...Sunny. Slight chance of rain showers. Highs in the
mid 60s to the mid 70s.
.THURSDAY NIGHT AND FRIDAY...Mostly clear. Lows of around 40 to
around 50. Highs in the upper 60s to the upper 70s.
.FRIDAY NIGHT...Partly cloudy. Lows of around 40 to around 50.
.SATURDAY...Mostly sunny. Chance of rain showers. Highs in the
lower 60s to mid 70s.

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