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

44°F

7°C

Humidity 39%
Wind Speed NA 6 MPH
Barometer NA
Dewpoint 20°F (-7°C)
Visibility NA
Wind Chill41°F (5°C)
Last update 19 Apr 05:10 AM MDT
Extended Forecast for

St Mary MT

  • Today

    Today: Sunny, with a high near 58. South southwest wind 6 to 10 mph, with gusts as high as 21 mph.

    High: 58 °F

    Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 41. South southwest wind 6 to 9 mph, with gusts as high as 20 mph.

    Low: 41 °F

    Mostly Cloudy

  • Monday

    Monday: Sunny, with a high near 66. South southwest wind 3 to 8 mph. Winds could gust as high as 18 mph.

    High: 66 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 44. Southwest wind 6 to 8 mph, with gusts as high as 18 mph.

    Low: 44 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 72. Southwest wind 5 to 7 mph.

    High: 72 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 43. Southwest wind around 6 mph becoming light and variable.

    Low: 43 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of rain, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 57. North wind 5 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.

    High: 57 °F

    Chance Rain
    then Showers
    Likely

  • Wednesday Night

    Wednesday Night: Rain before 9pm, then rain and snow between 9pm and 3am, then snow likely after 3am. Mostly cloudy, with a low around 27. North wind 14 to 16 mph, with gusts as high as 32 mph.

    Low: 27 °F

    Rain/Snow

  • Thursday

    Thursday: A chance of snow. Partly sunny, with a high near 41.

    High: 41 °F

    Chance Snow

Detailed Forecast

Today
Sunny, with a high near 58. South southwest wind 6 to 10 mph, with gusts as high as 21 mph.
Tonight
Mostly cloudy, with a low around 41. South southwest wind 6 to 9 mph, with gusts as high as 20 mph.
Monday
Sunny, with a high near 66. South southwest wind 3 to 8 mph. Winds could gust as high as 18 mph.
Monday Night
Partly cloudy, with a low around 44. Southwest wind 6 to 8 mph, with gusts as high as 18 mph.
Tuesday
Mostly sunny, with a high near 72. Southwest wind 5 to 7 mph.
Tuesday Night
Mostly cloudy, with a low around 43. Southwest wind around 6 mph becoming light and variable.
Wednesday
A chance of rain, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 57. North wind 5 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.
Wednesday Night
Rain before 9pm, then rain and snow between 9pm and 3am, then snow likely after 3am. Mostly cloudy, with a low around 27. North wind 14 to 16 mph, with gusts as high as 32 mph.
Thursday
A chance of snow. Partly sunny, with a high near 41.
Thursday Night
A chance of snow, mainly before midnight. Mostly cloudy, with a low around 24.
Friday
A chance of snow. Partly sunny, with a high near 40.
Friday Night
Mostly cloudy, with a low around 21.
Saturday
A slight chance of snow. Mostly sunny, with a high near 42.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
St Mary MT
 48.74°N 113.44°W (Elev. 4554 ft)
Last Update:
3:32 am MDT Apr 19, 2026
Forecast Valid:
5am MDT Apr 19, 2026-6pm MDT Apr 25, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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