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

35°F

2°C

Humidity 87%
Wind Speed NA NA MPH
Barometer NA
Dewpoint 31°F (-1°C)
Visibility NA
Last update 22 Apr 07:00 PM MDT
Extended Forecast for

16 Miles W St Mary MT

Winter Weather Advisory until April 23, 06:00pm
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory until April 23, 06:00pm

    NOW until 6:00pm Thu

    Winter Weather Advisory

  • Tonight

    Low: 16 °F

    Heavy Snow

  • Thursday

    Thursday: Snow, mainly before 8am. The snow could be heavy at times. High near 23. North wind 13 to 17 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New snow accumulation of 3 to 5 inches possible.

    High: 23 °F

    Heavy Snow

  • Thursday Night

    Thursday Night: Snow likely, mainly before midnight. Mostly cloudy, with a low around 12. Wind chill values as low as zero. North wind around 14 mph, with gusts as high as 18 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.

    Low: 12 °F

    Snow Likely
    then Chance
    Snow

  • Friday

    Friday: Snow likely, mainly after noon. Mostly cloudy, with a high near 20. Wind chill values as low as -5. North wind around 14 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    High: 20 °F

    Snow Likely

  • Friday Night

    Friday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 11. North northeast wind 9 to 14 mph. New snow accumulation of less than one inch possible.

    Low: 11 °F

    Chance Snow

  • Saturday

    Saturday: A 40 percent chance of snow. Mostly cloudy, with a high near 21. North northeast wind 9 to 11 mph. New snow accumulation of less than a half inch possible.

    High: 21 °F

    Chance Snow

  • Saturday Night

    Saturday Night: A 20 percent chance of snow. Mostly cloudy, with a low around 11. Northeast wind 9 to 13 mph.

    Low: 11 °F

    Slight Chance
    Snow

  • Sunday

    Sunday: A chance of snow. Partly sunny, with a high near 22. Northeast wind 9 to 11 mph.

    High: 22 °F

    Chance Snow

Detailed Forecast

Tonight
Snow. The snow could be heavy at times. Low around 16. North wind 14 to 17 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of 3 to 7 inches possible.
Thursday
Snow, mainly before 8am. The snow could be heavy at times. High near 23. North wind 13 to 17 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New snow accumulation of 3 to 5 inches possible.
Thursday Night
Snow likely, mainly before midnight. Mostly cloudy, with a low around 12. Wind chill values as low as zero. North wind around 14 mph, with gusts as high as 18 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.
Friday
Snow likely, mainly after noon. Mostly cloudy, with a high near 20. Wind chill values as low as -5. North wind around 14 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Friday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 11. North northeast wind 9 to 14 mph. New snow accumulation of less than one inch possible.
Saturday
A 40 percent chance of snow. Mostly cloudy, with a high near 21. North northeast wind 9 to 11 mph. New snow accumulation of less than a half inch possible.
Saturday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 11. Northeast wind 9 to 13 mph.
Sunday
A chance of snow. Partly sunny, with a high near 22. Northeast wind 9 to 11 mph.
Sunday Night
Mostly cloudy, with a low around 14.
Monday
A chance of snow after noon. Partly sunny, with a high near 30.
Monday Night
Mostly cloudy, with a low around 22.
Tuesday
A chance of snow. Partly sunny, with a high near 36.
Tuesday Night
A slight chance of snow. Partly cloudy, with a low around 25.
Wednesday
A slight chance of snow. Mostly sunny, with a high near 40.
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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:
4:17 pm MDT Apr 22, 2026
Forecast Valid:
9pm MDT Apr 22, 2026-6pm MDT Apr 29, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation