National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

USCRN SITE NEAR ST. MARY 1SSW (MRYM8)

Lat: 48.74111°NLon: 113.43306°WElev: 4550.0ft.

NA

37°F

3°C

Humidity 58%
Wind Speed NA 1 MPH
Barometer NA
Dewpoint 24°F (-4°C)
Visibility NA
Last update 10 Apr 09:10 AM MDT
Extended Forecast for

St Mary MT

  • Today

    Today: Mostly sunny, with a high near 60. South southwest wind 3 to 5 mph.

    High: 60 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 39. South southwest wind around 5 mph becoming calm in the evening.

    Low: 39 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 40 percent chance of showers after noon. Partly sunny, with a high near 60. Light south southwest wind becoming west southwest 5 to 10 mph in the afternoon. Winds could gust as high as 18 mph.

    High: 60 °F

    Partly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 37. West southwest wind 6 to 10 mph, with gusts as high as 18 mph.

    Low: 37 °F

    Chance
    Showers

  • Sunday

    Sunday: A 50 percent chance of rain. Mostly cloudy, with a high near 51. West wind around 7 mph becoming north northeast in the afternoon.

    High: 51 °F

    Chance Rain

  • Sunday Night

    Sunday Night: A 40 percent chance of rain. Mostly cloudy, with a low around 36. East northeast wind around 6 mph becoming light and variable after midnight.

    Low: 36 °F

    Chance Rain

  • Monday

    Monday: Rain likely, mainly after noon. Mostly cloudy, with a high near 53. West southwest wind 3 to 8 mph. Winds could gust as high as 18 mph. Chance of precipitation is 60%.

    High: 53 °F

    Rain Likely

  • Monday Night

    Monday Night: A chance of rain before midnight. Mostly cloudy, with a low around 36. West southwest wind around 11 mph, with gusts as high as 24 mph.

    Low: 36 °F

    Chance Rain
    then Mostly
    Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 46.

    High: 46 °F

    Partly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 60. South southwest wind 3 to 5 mph.
Tonight
Mostly cloudy, with a low around 39. South southwest wind around 5 mph becoming calm in the evening.
Saturday
A 40 percent chance of showers after noon. Partly sunny, with a high near 60. Light south southwest wind becoming west southwest 5 to 10 mph in the afternoon. Winds could gust as high as 18 mph.
Saturday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 37. West southwest wind 6 to 10 mph, with gusts as high as 18 mph.
Sunday
A 50 percent chance of rain. Mostly cloudy, with a high near 51. West wind around 7 mph becoming north northeast in the afternoon.
Sunday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 36. East northeast wind around 6 mph becoming light and variable after midnight.
Monday
Rain likely, mainly after noon. Mostly cloudy, with a high near 53. West southwest wind 3 to 8 mph. Winds could gust as high as 18 mph. Chance of precipitation is 60%.
Monday Night
A chance of rain before midnight. Mostly cloudy, with a low around 36. West southwest wind around 11 mph, with gusts as high as 24 mph.
Tuesday
Partly sunny, with a high near 46.
Tuesday Night
A slight chance of rain and snow before 9pm, then a chance of snow. Mostly cloudy, with a low around 32.
Wednesday
Snow likely. Mostly cloudy, with a high near 42.
Wednesday Night
Snow likely. Mostly cloudy, with a low around 23.
Thursday
A chance of snow. Partly sunny, with a high near 39.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
St Mary MT
 48.74°N 113.44°W (Elev. 4554 ft)
Last Update:
4:31 am MDT Apr 10, 2026
Forecast Valid:
9am MDT Apr 10, 2026-6pm MDT Apr 16, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation