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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10 Miles NNW Big Arm MT

7 Day Forecast

For More Weather Information:

Missoula, MT Local Forecast Office

Overnight

Snow Chance for Measurable Precipitation 100%

Snow

Low: 32 °F

Sunday

Rain Likely Chance for Measurable Precipitation 70%

Rain
Likely

High: 41 °F

Sunday
Night

Chance Rain/Snow Chance for Measurable Precipitation 40%

Chance
Rain/Snow

Low: 30 °F

Monday

Chance Snow Chance for Measurable Precipitation 40%

Chance
Snow

High: 35 °F

Monday
Night

Slight Chance Snow Chance for Measurable Precipitation 20%

Slight Chc
Snow

Low: 24 °F

Tuesday

Chance Snow Chance for Measurable Precipitation 50%

Chance
Snow

High: 31 °F

Tuesday
Night

Chance Rain/Snow Chance for Measurable Precipitation 40%

Chance
Rain/Snow

Low: 25 °F

Wednesday

Chance Snow

Chance
Snow

High: 32 °F

Wednesday
Night

Snow

Snow

Low: 24 °F

Detailed Forecast

  • Overnight Snow. Low around 32. South wind around 8 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 1 to 3 inches possible.
  • Sunday Rain likely. Mostly cloudy, with a high near 41. West wind 10 to 15 mph increasing to 16 to 21 mph in the morning. Winds could gust as high as 29 mph. Chance of precipitation is 70%.
  • Sunday Night A chance of rain before 11pm, then a chance of snow. Mostly cloudy, with a low around 30. West wind 6 to 10 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.
  • Monday A 40 percent chance of snow showers, mainly before 11am. Mostly cloudy, with a high near 35. West southwest wind around 7 mph. New snow accumulation of less than a half inch possible.
  • Monday Night A 20 percent chance of snow showers. Mostly cloudy, with a low around 24. Light south southwest wind.
  • Tuesday A chance of snow showers. Mostly cloudy, with a high near 31. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
  • Tuesday Night A chance of rain and snow. Cloudy, with a low around 25. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.
  • Wednesday A chance of snow. Cloudy, with a high near 32.
  • Wednesday Night Snow. Mostly cloudy, with a low around 24.
  • Christmas Day A chance of snow. Mostly cloudy, with a high near 27.
  • Thursday Night A slight chance of snow. Mostly cloudy, with a low around 12.
  • Friday A chance of snow. Cloudy, with a high near 24.
  • Friday Night A chance of snow. Mostly cloudy, with a low around 15.
  • Saturday A chance of snow. Cloudy, with a high near 27.