National Weather Service United States Department of Commerce

Heavy rain and mountain snow across the northwestern U.S. this weekend

A Pacific storm system will continue to impact the Pacific Northwest through late Sunday. Heavy rainfall could lead to flash flooding, river and small stream flooding, as well as mudslides and debris flows, especially over burn scars. At higher elevations, strong winds and heavy snowfall, with accumulations of 1 to 3 feet, could result in hazardous travel through mountain passes.
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Current Conditions

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6 Miles W Big Sky MT

7 Day Forecast

For More Weather Information:

Great Falls, MT Local Forecast Office

This
Afternoon

Snow Chance for Measurable Precipitation 90%

Snow

High: 28 °F

Tonight

Snow Likely Chance for Measurable Precipitation 70%

Snow
Likely

Low: 13 °F

Monday

Snow Likely Chance for Measurable Precipitation 60%

Snow
Likely

High: 18 °FFalling Temperatures

Monday
Night

Chance Snow Chance for Measurable Precipitation 40%

Chance
Snow

Low: 8 °F

Tuesday

Slight Chance Snow Chance for Measurable Precipitation 20%

Slight Chc
Snow

High: 21 °F

Tuesday
Night

Chance Snow Chance for Measurable Precipitation 30%

Chance
Snow

Low: 15 °F

Wednesday

Chance Snow Chance for Measurable Precipitation 50%

Chance
Snow

High: 25 °F

Wednesday
Night

Snow

Snow

Low: 11 °F

Christmas
Day

Snow

Snow

High: 11 °F

Detailed Forecast

  • This Afternoon Snow. High near 28. Breezy, with a west wind around 29 mph, with gusts as high as 47 mph. Chance of precipitation is 90%. Total daytime snow accumulation of 3 to 7 inches possible.
  • Tonight Snow likely. Mostly cloudy, with a low around 13. Blustery, with a west wind 20 to 28 mph, with gusts as high as 46 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.
  • Monday Snow likely. Partly sunny, with a temperature rising to near 18 by 11am, then falling to around 14 during the remainder of the day. Wind chill values as low as -2. West northwest wind 16 to 20 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.
  • Monday Night A 40 percent chance of snow. Mostly cloudy, with a low around 8. Wind chill values as low as -7. Northwest wind 11 to 17 mph, with gusts as high as 24 mph. New snow accumulation of less than a half inch possible.
  • Tuesday A 20 percent chance of snow before 11am. Partly sunny, with a high near 21. West southwest wind 9 to 13 mph.
  • Tuesday Night A 30 percent chance of snow. Mostly cloudy, with a low around 15. New snow accumulation of 1 to 2 inches possible.
  • Wednesday A 50 percent chance of snow. Cloudy, with a high near 25. Breezy. New snow accumulation of 1 to 3 inches possible.
  • Wednesday Night Snow. Cloudy, with a low around 11.
  • Christmas Day Snow. Cloudy, with a high near 11.
  • Thursday Night A chance of snow. Mostly cloudy, with a low around 4.
  • Friday A slight chance of snow. Mostly cloudy, with a high near 12.
  • Friday Night A slight chance of snow. Mostly cloudy, with a low around 5.
  • Saturday A slight chance of snow. Mostly cloudy, with a high near 14.