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

25°F

-4°C

Humidity 73%
Wind Speed NA 0 MPH
Barometer NA
Dewpoint 17°F (-8°C)
Visibility NA
Last update 10 Apr 03:10 AM MDT
Extended Forecast for

St Mary MT

  • Overnight

    Overnight: Mostly clear, with a low around 32. Light south southwest wind.

    Low: 32 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 60. Calm wind becoming south southwest around 5 mph in the afternoon.

    High: 60 °F

    Mostly Sunny

  • Friday Night

    Friday Night: 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.

    High: 53 °F

    Rain Likely

  • Monday Night

    Monday Night: A chance of rain before midnight. Mostly cloudy, with a low around 36.

    Low: 36 °F

    Chance Rain
    then Mostly
    Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 32. Light south southwest wind.
Friday
Mostly sunny, with a high near 60. Calm wind becoming south southwest around 5 mph in the afternoon.
Friday Night
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.
Monday Night
A chance of rain before midnight. Mostly cloudy, with a low around 36.
Tuesday
Partly sunny, with a high near 46.
Tuesday Night
A chance of rain and 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.
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:
12:31 am MDT Apr 10, 2026
Forecast Valid:
3am MDT Apr 10, 2026-6pm MDT Apr 16, 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