National Weather Service United States Department of Commerce

Arctic air to drop temperatures across the northern Plain and northern Rockies; will bring snow to the Intermountain West

An arctic front is forecast to plunge through the northern Plains and northern Rockies on Saturday bringing a drastic drop in temperatures across these areas with a burst of snow over much of the Intermountain Region. Arctic air will also filter into the Pacific Northwest bringing with it snow showers and subfreezing low temperatures.
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Current Conditions

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3 Miles SW Lolo Pass OR

7 Day Forecast

For More Weather Information:

Portland, OR Local Forecast Office

Overnight

Snow Likely Chance for Measurable Precipitation 70%

Snow
Likely

Low: 36 °F

Saturday

Snow Likely Chance for Measurable Precipitation 70%

Snow
Likely

High: 32 °FFalling Temperatures

Saturday
Night

Slight Chance Snow Chance for Measurable Precipitation 20%

Slight Chc
Snow

Low: 20 °F

Sunday

Sunny

Sunny

High: 28 °F

Sunday
Night

Mostly Cloudy

Mostly
Cloudy

Low: 19 °F

Monday

Snow Likely Chance for Measurable Precipitation 70%

Snow
Likely

High: 38 °F

Monday
Night

Rain Likely Chance for Measurable Precipitation 70%

Rain
Likely

Low: 26 °F

Tuesday

Slight Chance Showers

Slight Chc
Showers

High: 38 °F

Tuesday
Night

Mostly Cloudy

Mostly
Cloudy

Low: 25 °F

Detailed Forecast

  • Overnight Snow showers likely. Cloudy, with a steady temperature around 36. West wind around 8 mph. Chance of precipitation is 70%. Total nighttime snow accumulation of less than a half inch possible.
  • Saturday Snow showers likely, mainly before 10am. Cloudy, then gradually becoming mostly sunny, with a temperature falling to around 30 by 10am. West wind around 8 mph becoming north northwest in the afternoon. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
  • Saturday Night A 20 percent chance of snow showers before 10pm. Mostly clear, with a low around 20. North northwest wind around 5 mph becoming light and variable in the evening.
  • Sunday Sunny, with a high near 28. East wind around 11 mph.
  • Sunday Night Mostly cloudy, with a low around 19. East southeast wind 7 to 11 mph.
  • Monday Snow likely. Mostly cloudy, with a high near 38. Chance of precipitation is 70%. New snow accumulation of around an inch possible.
  • Monday Night Rain likely. Mostly cloudy, with a low around 26. Chance of precipitation is 70%.
  • Tuesday A slight chance of showers. Mostly cloudy, with a high near 38.
  • Tuesday Night Mostly cloudy, with a low around 25.
  • Wednesday A chance of rain and snow showers. Cloudy, with a high near 37.
  • Wednesday Night A chance of rain. Cloudy, with a low around 28.
  • Thursday A chance of rain. Cloudy, with a high near 41.
  • Thursday Night Rain likely. Cloudy, with a low around 28.
  • Friday A chance of rain. Cloudy, with a high near 41.