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

Atmospheric River Continues Areas of Heavy Rain and Snow for California This Weekend

An atmospheric river will continue to bring gusty winds, moderate to heavy rainfall, and potential flooding to southern California and the southern Great Basin through Sunday. Periods of heavy snow will continue as well above 7,000 feet over the Sierra Nevada mountains associated with this atmospheric river. Read More >

Current conditions at

FLATTOP MTN. (FTMM8)

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

NA

32°F

0°C

Humidity 98%
Wind Speed NA NA MPH
Barometer NA
Dewpoint 31°F (-1°C)
Visibility NA
Last update 14 Nov 07:00 PM MST
Extended Forecast for

16 Miles W St Mary MT

  • Tonight

    Tonight: Snow. The snow could be heavy at times. Low around 27. Southwest wind 17 to 20 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. Total nighttime snow accumulation of 4 to 8 inches possible.

    Low: 27 °F

    Heavy Snow

  • Saturday

    Saturday: Snow likely, mainly before 8am. Cloudy, with a high near 30. Southwest wind 16 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.

    High: 30 °F

    Snow Likely
    then Chance
    Snow

  • Saturday Night

    Saturday Night: A 40 percent chance of snow. Cloudy, with a low around 27. West southwest wind 10 to 15 mph, with gusts as high as 21 mph. Little or no snow accumulation expected.

    Low: 27 °F

    Chance Snow

  • Sunday

    Sunday: A chance of rain and snow before 3pm, then a chance of snow. Mostly cloudy, with a high near 32. West southwest wind around 8 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    High: 32 °F

    Chance
    Rain/Snow

  • Sunday Night

    Sunday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 26. Northeast wind 6 to 9 mph becoming west southwest in the evening. New snow accumulation of less than a half inch possible.

    Low: 26 °F

    Chance Snow

  • Monday

    Monday: A 50 percent chance of snow. Mostly cloudy, with a high near 29. West southwest wind around 11 mph. New snow accumulation of less than a half inch possible.

    High: 29 °F

    Chance Snow

  • Monday Night

    Monday Night: Snow likely. Cloudy, with a low around 23. West southwest wind around 10 mph. Chance of precipitation is 70%. New snow accumulation of around an inch possible.

    Low: 23 °F

    Snow Likely

  • Tuesday

    Tuesday: Snow likely, mainly before 11am. Mostly cloudy, with a high near 24. West southwest wind around 10 mph.

    High: 24 °F

    Snow Likely

  • Tuesday Night

    Tuesday Night: A chance of snow. Mostly cloudy, with a low around 20.

    Low: 20 °F

    Chance Snow

Detailed Forecast

Tonight
Snow. The snow could be heavy at times. Low around 27. Southwest wind 17 to 20 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. Total nighttime snow accumulation of 4 to 8 inches possible.
Saturday
Snow likely, mainly before 8am. Cloudy, with a high near 30. Southwest wind 16 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.
Saturday Night
A 40 percent chance of snow. Cloudy, with a low around 27. West southwest wind 10 to 15 mph, with gusts as high as 21 mph. Little or no snow accumulation expected.
Sunday
A chance of rain and snow before 3pm, then a chance of snow. Mostly cloudy, with a high near 32. West southwest wind around 8 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Sunday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 26. Northeast wind 6 to 9 mph becoming west southwest in the evening. New snow accumulation of less than a half inch possible.
Monday
A 50 percent chance of snow. Mostly cloudy, with a high near 29. West southwest wind around 11 mph. New snow accumulation of less than a half inch possible.
Monday Night
Snow likely. Cloudy, with a low around 23. West southwest wind around 10 mph. Chance of precipitation is 70%. New snow accumulation of around an inch possible.
Tuesday
Snow likely, mainly before 11am. Mostly cloudy, with a high near 24. West southwest wind around 10 mph.
Tuesday Night
A chance of snow. Mostly cloudy, with a low around 20.
Wednesday
A chance of snow, mainly before 11am. Mostly cloudy, with a high near 21.
Wednesday Night
A chance of snow. Mostly cloudy, with a low around 19.
Thursday
A chance of snow. Mostly cloudy, with a high near 20.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 14.
Friday
A chance of snow. Partly sunny, with a high near 20.
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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:
4:53 pm MST Nov 14, 2025
Forecast Valid:
8pm MST Nov 14, 2025-6pm MST Nov 21, 2025
 
Forecast Discussion
 
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Additional Resources

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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