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

Hazardous Weather Conditions

Current conditions at

FLATTOP MTN. (FTMM8)

Lat: 48.80225°NLon: 113.85713°WElev: 6300.0ft.

NA

18°F

-8°C

Humidity 90%
Wind Speed NA NA MPH
Barometer NA
Dewpoint 16°F (-9°C)
Visibility NA
Last update 13 Mar 10:00 AM MDT
Extended Forecast for

16 Miles W St Mary MT

Winter Storm Warning March 13, 11:47am until March 14, 06:00pm
Click here for hazard details and duration
Winter Storm Warning
  •  
    Winter Storm Warning March 13, 11:47am until March 14, 06:00pm

    NOW until 6:00pm Sat

    Winter Storm Warning

  • Today

    High: 19 °F

    Snow

  • Tonight

    Tonight: Snow. Low around 8. West southwest wind 8 to 10 mph becoming north northeast after midnight. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

    Low: 8 °F

    Snow

  • Saturday

    Saturday: Snow, mainly before 2pm. Temperature falling to around 8 by 10am. Wind chill values as low as -10. West northwest wind 9 to 18 mph becoming northeast in the morning. Winds could gust as high as 24 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

    High: 13 °F⇓

    Snow

  • Saturday Night

    Saturday Night: Snow likely, mainly before midnight. Mostly cloudy, with a low around -3. Wind chill values as low as -20. Northeast wind 9 to 14 mph becoming west southwest after midnight. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    Low: -3 °F

    Snow Likely
    then Chance
    Snow

  • Sunday

    Sunday: A 20 percent chance of snow after noon. Partly sunny, with a high near 15. West southwest wind 9 to 17 mph, with gusts as high as 24 mph.

    High: 15 °F

    Partly Sunny
    then Slight
    Chance Snow

  • Sunday Night

    Sunday Night: A 50 percent chance of snow. Mostly cloudy, with a low around 14. Breezy, with a southwest wind 17 to 22 mph, with gusts as high as 26 mph. New snow accumulation of less than a half inch possible.

    Low: 14 °F

    Chance Snow
    and Breezy

  • Monday

    Monday: Snow likely. Cloudy, with a high near 30. Breezy, with a southwest wind 23 to 28 mph, with gusts as high as 38 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 30 °F

    Snow Likely
    and Breezy

  • Monday Night

    Monday Night: Snow likely, mainly before midnight. Mostly cloudy, with a low around 28. Breezy, with a southwest wind 26 to 28 mph, with gusts as high as 37 mph.

    Low: 28 °F

    Snow Likely
    and Breezy

Detailed Forecast

Today
Snow, mainly before 4pm. High near 19. Wind chill values as low as zero. West southwest wind around 10 mph. Chance of precipitation is 80%. Total daytime snow accumulation of 1 to 3 inches possible.
Tonight
Snow. Low around 8. West southwest wind 8 to 10 mph becoming north northeast after midnight. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
Saturday
Snow, mainly before 2pm. Temperature falling to around 8 by 10am. Wind chill values as low as -10. West northwest wind 9 to 18 mph becoming northeast in the morning. Winds could gust as high as 24 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
Saturday Night
Snow likely, mainly before midnight. Mostly cloudy, with a low around -3. Wind chill values as low as -20. Northeast wind 9 to 14 mph becoming west southwest after midnight. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Sunday
A 20 percent chance of snow after noon. Partly sunny, with a high near 15. West southwest wind 9 to 17 mph, with gusts as high as 24 mph.
Sunday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 14. Breezy, with a southwest wind 17 to 22 mph, with gusts as high as 26 mph. New snow accumulation of less than a half inch possible.
Monday
Snow likely. Cloudy, with a high near 30. Breezy, with a southwest wind 23 to 28 mph, with gusts as high as 38 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Monday Night
Snow likely, mainly before midnight. Mostly cloudy, with a low around 28. Breezy, with a southwest wind 26 to 28 mph, with gusts as high as 37 mph.
Tuesday
A chance of snow. Mostly cloudy, with a high near 34. Breezy.
Tuesday Night
A chance of snow. Mostly cloudy, with a low around 33. Breezy.
Wednesday
A chance of rain and snow. Partly sunny, with a high near 36. Breezy.
Wednesday Night
A chance of rain and snow. Mostly cloudy, with a low around 34. Breezy.
Thursday
A chance of snow. Mostly cloudy, with a high near 37. Breezy.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
16 Miles W St Mary MT
 48.79°N 113.77°W (Elev. 7480 ft)
Last Update:
10:57 am MDT Mar 13, 2026
Forecast Valid:
11am MDT Mar 13, 2026-6pm MDT Mar 19, 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