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 West Coast through 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.
Read More...

Current Conditions

En Español

Share |

Big Sky MT

7 Day Forecast

For More Weather Information:

Great Falls, MT Local Forecast Office

Today

Snow Chance for Measurable Precipitation 100%

Snow

High: 39 °F

Tonight

Snow Likely Chance for Measurable Precipitation 70%

Snow
Likely

Low: 24 °F

Monday

Snow Likely Chance for Measurable Precipitation 60%

Snow
Likely

High: 31 °F

Monday
Night

Chance Snow Chance for Measurable Precipitation 40%

Chance
Snow

Low: 10 °F

Tuesday

Slight Chance Snow Chance for Measurable Precipitation 20%

Slight Chc
Snow

High: 27 °F

Tuesday
Night

Chance Snow Chance for Measurable Precipitation 30%

Chance
Snow

Low: 12 °F

Wednesday

Chance Snow Chance for Measurable Precipitation 50%

Chance
Snow

High: 31 °F

Wednesday
Night

Snow

Snow

Low: 17 °F

Christmas
Day

Snow

Snow

High: 23 °F

Detailed Forecast

  • Today Snow. High near 39. West wind 9 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. Total daytime snow accumulation of 2 to 4 inches possible.
  • Tonight Snow likely. Mostly cloudy, with a low around 24. West wind 10 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.
  • Monday Snow likely, mainly after 11am. Mostly cloudy, with a high near 31. West wind around 9 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 10. West northwest wind 6 to 9 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 27. Southwest wind 7 to 9 mph.
  • Tuesday Night A 30 percent chance of snow. Mostly cloudy, with a low around 12. New snow accumulation of less than one inch possible.
  • Wednesday A 50 percent chance of snow. Cloudy, with a high near 31. New snow accumulation of less than one inch possible.
  • Wednesday Night Snow. Cloudy, with a low around 17.
  • Christmas Day Snow. Cloudy, with a high near 23.
  • Thursday Night A chance of snow. Mostly cloudy, with a low around 6.
  • Friday A slight chance of snow. Mostly cloudy, with a high near 20.
  • Friday Night A slight chance of snow. Mostly cloudy, with a low around 7.
  • Saturday A slight chance of snow. Partly sunny, with a high near 22.