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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8 Miles N Mount St Helens WA

7 Day Forecast

For More Weather Information:

Portland, OR Local Forecast Office

Overnight

Snow Chance for Measurable Precipitation 80%

Snow

Low: 26 °F

Saturday

Snow Chance for Measurable Precipitation 80%

Snow

High: 25 °FFalling Temperatures

Saturday
Night

Mostly Clear

Mostly
Clear

Low: 16 °F

Sunday

Breezy

Breezy

High: 28 °F

Sunday
Night

Breezy

Breezy

Low: 25 °F

Monday

Chance Snow Chance for Measurable Precipitation 40%

Chance
Snow

High: 34 °F

Monday
Night

Chance Snow Chance for Measurable Precipitation 40%

Chance
Snow

Low: 25 °F

Tuesday

Slight Chance Snow

Slight Chc
Snow

High: 34 °F

Tuesday
Night

Mostly Cloudy

Mostly
Cloudy

Low: 29 °F

Detailed Forecast

  • Overnight Snow showers. Steady temperature around 26. West wind around 20 mph, with gusts as high as 31 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of less than one inch possible.
  • Saturday Snow showers, mainly before 10am. Temperature falling to around 18 by 5pm. West wind 11 to 16 mph becoming north in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
  • Saturday Night Mostly clear, with a low around 16. Wind chill values as low as -1. Light and variable wind becoming east 9 to 14 mph in the evening. Winds could gust as high as 18 mph.
  • Sunday Sunny, with a high near 28. Wind chill values as low as -2. Breezy, with an east wind around 23 mph, with gusts as high as 30 mph.
  • Sunday Night Partly cloudy, with a low around 25. Breezy, with a southeast wind 18 to 23 mph, with gusts as high as 30 mph.
  • Monday A 40 percent chance of snow. Mostly cloudy, with a high near 34. Little or no snow accumulation expected.
  • Monday Night A 40 percent chance of snow. Mostly cloudy, with a low around 25. Little or no snow accumulation expected.
  • Tuesday A slight chance of snow showers. Partly sunny, with a high near 34.
  • Tuesday Night Mostly cloudy, with a low around 29.
  • Wednesday A slight chance of rain and snow showers. Mostly cloudy, with a high near 36.
  • Wednesday Night A chance of rain. Cloudy, with a low around 31.
  • Thursday A chance of rain. Cloudy, with a high near 36.
  • Thursday Night Rain likely. Cloudy, with a low around 32.
  • Friday A chance of rain. Mostly cloudy, with a high near 37.