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.
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Current Conditions

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4 Miles S West Yellowstone MT

7 Day Forecast

For More Weather Information:

Great Falls, MT Local Forecast Office

Overnight

Snow Chance for Measurable Precipitation 100%

Snow

Low: 26 °F

Sunday

Snow Chance for Measurable Precipitation 100%

Snow

High: 33 °F

Sunday
Night

Snow Chance for Measurable Precipitation 90%

Snow

Low: 33 °F

Monday

Chance Snow Chance for Measurable Precipitation 50%

Chance
Snow

High: 28 °F

Monday
Night

Slight Chance Snow Chance for Measurable Precipitation 20%

Slight Chc
Snow

Low: 6 °F

Tuesday

Slight Chance Snow Chance for Measurable Precipitation 20%

Slight Chc
Snow

High: 24 °F

Tuesday
Night

Chance Snow Chance for Measurable Precipitation 30%

Chance
Snow

Low: 19 °F

Wednesday

Snow Likely

Snow
Likely

High: 30 °F

Wednesday
Night

Snow Likely

Snow
Likely

Low: 18 °F

Detailed Forecast

  • Overnight Snow. Low around 26. South southwest wind 11 to 13 mph, with gusts as high as 34 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 3 to 5 inches possible.
  • Sunday Snow. High near 33. Southwest wind 10 to 14 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.
  • Sunday Night Snow. Steady temperature around 33. West wind 7 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
  • Monday A 50 percent chance of snow. Mostly cloudy, with a high near 28. West northwest wind 9 to 11 mph. New snow accumulation of less than one inch possible.
  • Monday Night A 20 percent chance of snow showers before 11pm. Mostly cloudy, with a low around 6. West wind 3 to 7 mph.
  • Tuesday A 20 percent chance of snow showers. Mostly cloudy, with a high near 24.
  • Tuesday Night A 30 percent chance of snow. Mostly cloudy, with a low around 19. New snow accumulation of less than a half inch possible.
  • Wednesday Snow likely. Mostly cloudy, with a high near 30.
  • Wednesday Night Snow likely. Cloudy, with a low around 18.
  • Christmas Day A chance of snow. Mostly cloudy, with a high near 21.
  • Thursday Night A chance of snow. Mostly cloudy, with a low around 4.
  • Friday A slight chance of snow. Partly sunny, with a high near 16.
  • Friday Night A slight chance of snow. Mostly cloudy, with a low around 11.
  • Saturday A chance of snow. Partly sunny, with a high near 19.