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Saint Mary, Montana Weather Forecast
Saint Mary, Montana Weather
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Weather Forecast for Saint Mary, Montana : Glacier County
Issued: 9:27 pm MST Dec 16, 2025 Latitude: 48.7438663 Longitude: -113.4295461 View on Google Maps

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Overnight Wednesday Thursday Friday Saturday Sunday Monday Tuesday
90% chance of rain & snow on Overnight 80% chance of blowing snow on Wednesday 50% chance of snow on Thursday 50% chance of snow on Friday 20% chance of snow on Saturday 20% chance of snow on Sunday 20% chance of snow on Monday 20% chance of snow on Tuesday
Low: 37°F High: 29 °F High: 37°F High: 36°F High: 31°F High: 33°F High: 38°F High: 38°F
Low: 23°F Low: 27°F Low: 19°F Low: 21°F Low: 23°F Low: 24°F  
Rain & Snow Blowing Snow Snow Snow Snow Snow Snow Snow
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Current Conditions at
CUTBANK - (KCTB)
45°
Feels like 36°F
Clear
as of 1:56 AM MST
Rel. Humidity: 56%
Dew Point: 30°F
Visibility: 10 Miles
Pressure: 29.35 in.
Flight Rule: VFR
Wind Data
22 MPH
Gust: 33 MPH
230° Southwest
Cloud Level(s): Clear
Current Conditions at
MISSOULA - (KMSO)
48°
Cloudy
Light Rain
as of 1:53 AM MST
Rel. Humidity: 61%
Dew Point: 36°F
Visibility: 10 Miles
Pressure: 29.52 in.
Flight Rule: VFR
Wind Data
6 MPH
260° West
Cloud Level(s): Broken at 5500ft, Solid Overcast at 7000ft
Current Conditions at
GREAT FALLS - (KGTF)
46°
Feels like 39°F
Clear
as of 1:53 AM MST
Rel. Humidity: 42%
Dew Point: 25°F
Visibility: 10 Miles
Pressure: 29.45 in.
Flight Rule: VFR
Wind Data
17 MPH
210° Southwest
Cloud Level(s): Clear
90% chance of rain & snow Overnight Overnight... Rain, possibly mixed with snow, becoming all rain after 5am. Low around 37. South southwest wind around 21 mph, with gusts as high as 49 mph. Chance of precipitation is 90%. Total nighttime snow accumulation of less than a half inch possible.
80% chance of blowing snow Wednesday Wednesday... Rain and snow before noon, then a slight chance of snow between noon and 4pm. The snow could be heavy at times. Patchy blowing snow after 11am. Patchy blowing dust. Temperature falling to around 29 by 4pm. Windy, with a west wind 28 to 38 mph, with gusts as high as 70 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.
Increasing Clouds on Wednesday Night Wednesday Night... Increasing clouds, with a low around 23. Breezy, with a west southwest wind 14 to 23 mph, with gusts as high as 49 mph.
50% chance of snow Thursday Thursday... A 50 percent chance of snow after 11am. Mostly cloudy, with a high near 37. Southwest wind 11 to 15 mph, with gusts as high as 32 mph. New snow accumulation of less than one inch possible.
80% chance of snow Thursday Night Thursday Night... Snow. Low around 27. Southwest wind 13 to 18 mph, with gusts as high as 45 mph. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.
50% chance of snow Friday Friday... A 50 percent chance of snow. Partly sunny, with a high near 36. West southwest wind 13 to 18 mph, with gusts as high as 43 mph. New snow accumulation of less than one inch possible.
40% chance of snow Friday Night Friday Night... A 40 percent chance of snow. Mostly cloudy, with a low around 19. West southwest wind around 9 mph, with gusts as high as 22 mph. New snow accumulation of less than a half inch possible.
20% chance of snow Saturday Saturday... A chance of snow. Partly sunny, with a high near 31. West southwest wind 10 to 14 mph, with gusts as high as 31 mph.
20% chance of snow Saturday Night Saturday Night... A chance of snow. Mostly cloudy, with a low around 21.
20% chance of snow Sunday Sunday... A chance of snow. Partly sunny, with a high near 33.
20% chance of snow Sunday Night Sunday Night... A chance of snow. Mostly cloudy, with a low around 23.
20% chance of snow Monday Monday... A chance of snow. Partly sunny, with a high near 38.
20% chance of snow Monday Night Monday Night... A chance of snow. Mostly cloudy, with a low around 24.
20% chance of snow Tuesday Tuesday... A chance of snow. Partly sunny, with a high near 38.
Current Radar Image


Sun Almanac for Saint Mary, Montana
Sunrise: 08:22 AM
Sunset: 4:38 PM
Civil Sunrise:07:45 AM
Civil Sunset: 5:15 PM
Nautical Sunrise: 07:04 AM
Nautical Sunset: 5:56 PM
Astro Sunrise: 06:26 AM
Astro Sunset: 6:34 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.