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

Fire Weather Concerns West; Thunderstorms in the Upper Midwest

Dry and breezy conditions will enhance fire weather concerns across portions of the northern and central High Plains through Saturday, where fuels remain largely receptive. Severe thunderstorms are possible across portions of central Nebraska to the Upper Midwest this Friday afternoon into tonight. Read More >

Current conditions at

ST. MARY (SRYM8)

Lat: 48.74108°NLon: 113.43289°WElev: 4557.0ft.

NA

45°F

7°C

Humidity 98%
Wind Speed SW 1 MPH
Barometer NA
Dewpoint 44°F (7°C)
Visibility NA
Last update 11 Sep 02:11 AM MDT
Extended Forecast for

St Mary MT

  • Overnight

    Overnight: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 3am. Cloudy, with a low around 37. Calm wind. Chance of precipitation is 60%.

    Low: 37 °F

    Showers
    Likely

  • Friday

    Friday: Showers, mainly before 5pm. High near 46. Calm wind becoming north northeast around 6 mph in the morning. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 46 °F

    Showers then
    Showers
    Likely

  • Friday Night

    Friday Night: Showers, mainly after 10pm. Low around 36. North northeast wind 3 to 5 mph. Chance of precipitation is 80%.

    Low: 36 °F

    Chance
    Showers then
    Showers

  • Saturday

    Saturday: Showers likely, mainly before noon. Cloudy, with a high near 46. East wind 3 to 6 mph. Chance of precipitation is 60%.

    High: 46 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers likely, mainly after midnight. Mostly cloudy, with a low around 34. East wind around 6 mph. Chance of precipitation is 60%.

    Low: 34 °F

    Showers
    Likely

  • Sunday

    Sunday: Rain showers before 9am, then rain, possibly mixed with snow showers between 9am and 3pm, then rain showers after 3pm. High near 45. East wind around 6 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

    High: 45 °F

    Rain/Snow

  • Sunday Night

    Sunday Night: Rain showers before 9pm, then rain, possibly mixed with snow showers between 9pm and midnight, then rain showers likely after midnight. Low around 33. West southwest wind 3 to 8 mph. Winds could gust as high as 20 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

    Low: 33 °F

    Rain/Snow
    then Showers
    Likely

  • Monday

    Monday: A slight chance of showers. Mostly cloudy, with a high near 49. West southwest wind 7 to 9 mph, with gusts as high as 20 mph.

    High: 49 °F

    Slight Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers, mainly after midnight. Mostly cloudy, with a low around 35.

    Low: 35 °F

    Chance
    Showers

Detailed Forecast

Overnight
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 3am. Cloudy, with a low around 37. Calm wind. Chance of precipitation is 60%.
Friday
Showers, mainly before 5pm. High near 46. Calm wind becoming north northeast around 6 mph in the morning. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Showers, mainly after 10pm. Low around 36. North northeast wind 3 to 5 mph. Chance of precipitation is 80%.
Saturday
Showers likely, mainly before noon. Cloudy, with a high near 46. East wind 3 to 6 mph. Chance of precipitation is 60%.
Saturday Night
Showers likely, mainly after midnight. Mostly cloudy, with a low around 34. East wind around 6 mph. Chance of precipitation is 60%.
Sunday
Rain showers before 9am, then rain, possibly mixed with snow showers between 9am and 3pm, then rain showers after 3pm. High near 45. East wind around 6 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Sunday Night
Rain showers before 9pm, then rain, possibly mixed with snow showers between 9pm and midnight, then rain showers likely after midnight. Low around 33. West southwest wind 3 to 8 mph. Winds could gust as high as 20 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Monday
A slight chance of showers. Mostly cloudy, with a high near 49. West southwest wind 7 to 9 mph, with gusts as high as 20 mph.
Monday Night
A chance of showers, mainly after midnight. Mostly cloudy, with a low around 35.
Tuesday
A chance of showers, mainly after noon. Partly sunny, with a high near 51.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 35.
Wednesday
A chance of showers. Mostly sunny, with a high near 51.
Wednesday Night
Mostly clear, with a low around 36.
Thursday
Sunny, with a high near 60.
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 Sep 11, 2026
Forecast Valid:
2am MDT Sep 11, 2026-6pm MDT Sep 17, 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