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

Lake Effect Snow through Saturday: A Series of Storms Impact the West

Lake effect snow showers will continue through Saturday downwind of Lakes Erie, Ontario and the eastern portion of Lake Superior. A series of storm systems will continue to impact California and the Pacific Northwest through the weekend and into next week, bringing widespread rainfall, mountain snowfall, and gusty winds. Coastal flooding is expected in northern California. Read More >

Current conditions at

FLATTOP MTN. (FTMM8)

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

NA

16°F

-9°C

Humidity 91%
Wind Speed NA NA MPH
Barometer NA
Dewpoint 14°F (-10°C)
Visibility NA
Last update 01 Jan 02:00 AM MST
Extended Forecast for

16 Miles W St Mary MT

  • Tonight

    Tonight: A 30 percent chance of snow, mainly between midnight and 5am. Mostly cloudy, with a low around 23. Southwest wind around 14 mph, with gusts as high as 18 mph. Total nighttime snow accumulation of 1 to 3 inches possible.

    Low: 23 °F

    Cloudy then
    Chance Snow

  • Saturday

    Saturday: A 30 percent chance of snow after 4pm. Mostly cloudy, with a high near 28. Southwest wind 14 to 18 mph, with gusts as high as 28 mph. New snow accumulation of less than one inch possible.

    High: 28 °F

    Mostly Cloudy
    then Chance
    Snow

  • Saturday Night

    Saturday Night: Snow likely, mainly after 11pm. Mostly cloudy, with a low around 24. Southwest wind 16 to 20 mph, with gusts as high as 26 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.

    Low: 24 °F

    Snow Likely

  • Sunday

    Sunday: Snow likely. Mostly cloudy, with a high near 26. Breezy, with a southwest wind around 22 mph, with gusts as high as 33 mph. Chance of precipitation is 70%. New snow accumulation of 3 to 5 inches possible.

    High: 26 °F

    Snow Likely
    and Breezy

  • Sunday Night

    Sunday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 18. Breezy, with a west southwest wind 22 to 24 mph, with gusts as high as 31 mph. New snow accumulation of 1 to 3 inches possible.

    Low: 18 °F

    Chance Snow
    and Breezy

  • Monday

    Monday: A 50 percent chance of snow. Mostly cloudy, with a high near 21. Southwest wind 18 to 20 mph, with gusts as high as 29 mph. New snow accumulation of 2 to 4 inches possible.

    High: 21 °F

    Chance Snow

  • Monday Night

    Monday Night: A 20 percent chance of snow before 11pm. Mostly cloudy, with a low around 15. Breezy, with a southwest wind 18 to 24 mph, with gusts as high as 31 mph.

    Low: 15 °F

    Breezy.
    Slight Chance
    Snow then
    Mostly Cloudy

  • Tuesday

    Tuesday: A chance of snow, mainly after 11am. Mostly cloudy, with a high near 18. Breezy, with a southwest wind 23 to 25 mph, with gusts as high as 39 mph.

    High: 18 °F

    Chance Snow
    and Breezy

  • Tuesday Night

    Tuesday Night: Snow likely, mainly after 11pm. Mostly cloudy, with a low around 16. Breezy.

    Low: 16 °F

    Snow Likely
    and Breezy

Detailed Forecast

Tonight
A 30 percent chance of snow, mainly between midnight and 5am. Mostly cloudy, with a low around 23. Southwest wind around 14 mph, with gusts as high as 18 mph. Total nighttime snow accumulation of 1 to 3 inches possible.
Saturday
A 30 percent chance of snow after 4pm. Mostly cloudy, with a high near 28. Southwest wind 14 to 18 mph, with gusts as high as 28 mph. New snow accumulation of less than one inch possible.
Saturday Night
Snow likely, mainly after 11pm. Mostly cloudy, with a low around 24. Southwest wind 16 to 20 mph, with gusts as high as 26 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.
Sunday
Snow likely. Mostly cloudy, with a high near 26. Breezy, with a southwest wind around 22 mph, with gusts as high as 33 mph. Chance of precipitation is 70%. New snow accumulation of 3 to 5 inches possible.
Sunday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 18. Breezy, with a west southwest wind 22 to 24 mph, with gusts as high as 31 mph. New snow accumulation of 1 to 3 inches possible.
Monday
A 50 percent chance of snow. Mostly cloudy, with a high near 21. Southwest wind 18 to 20 mph, with gusts as high as 29 mph. New snow accumulation of 2 to 4 inches possible.
Monday Night
A 20 percent chance of snow before 11pm. Mostly cloudy, with a low around 15. Breezy, with a southwest wind 18 to 24 mph, with gusts as high as 31 mph.
Tuesday
A chance of snow, mainly after 11am. Mostly cloudy, with a high near 18. Breezy, with a southwest wind 23 to 25 mph, with gusts as high as 39 mph.
Tuesday Night
Snow likely, mainly after 11pm. Mostly cloudy, with a low around 16. Breezy.
Wednesday
Snow likely, mainly before 11am. Mostly cloudy, with a high near 17.
Wednesday Night
A chance of snow. Mostly cloudy, with a low around 10.
Thursday
A chance of snow. Mostly cloudy, with a high near 14.
Thursday Night
A slight chance of snow. Mostly cloudy, with a low around 6.
Friday
A slight chance of snow. Partly sunny, with a high near 14.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
16 Miles W St Mary MT
 48.79°N 113.77°W (Elev. 7480 ft)
Last Update:
3:38 pm MST Jan 2, 2026
Forecast Valid:
8pm MST Jan 2, 2026-6pm MST Jan 9, 2026
 
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