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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15 Miles N Sumpter OR

7 Day Forecast

For More Weather Information:

Boise, ID Local Forecast Office

Overnight

Snow Chance for Measurable Precipitation 80%

Snow

Low: 27 °F

Saturday

Snow Chance for Measurable Precipitation 80%

Snow

High: 27 °FFalling Temperatures

Saturday
Night

Chance Snow Chance for Measurable Precipitation 30%

Chance
Snow

Low: 10 °F

Sunday

Sunny

Sunny

High: 23 °F

Sunday
Night

Slight Chance Snow Chance for Measurable Precipitation 20%

Slight Chc
Snow

Low: 17 °F

Monday

Chance Snow Chance for Measurable Precipitation 50%

Chance
Snow

High: 30 °F

Monday
Night

Snow Likely Chance for Measurable Precipitation 60%

Snow
Likely

Low: 29 °F

Tuesday

Snow Likely Chance for Measurable Precipitation 60%

Snow
Likely

High: 34 °F

Tuesday
Night

Chance Snow Chance for Measurable Precipitation 40%

Chance
Snow

Low: 27 °F

Detailed Forecast

  • Overnight Snow. Low around 27. Breezy, with a west southwest wind around 21 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of 2 to 4 inches possible.
  • Saturday Snow, mainly before 10am. Temperature falling to around 18 by 5pm. West northwest wind 14 to 18 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
  • Saturday Night A 30 percent chance of snow showers before 10pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 10. Wind chill values between zero and 5. North northwest wind 7 to 13 mph. New snow accumulation of less than a half inch possible.
  • Sunday Sunny, with a high near 23. Light and variable wind becoming south southeast 5 to 7 mph in the morning.
  • Sunday Night A 20 percent chance of snow after 10pm. Partly cloudy, with a low around 17. South wind 14 to 18 mph.
  • Monday A 50 percent chance of snow. Mostly cloudy, with a high near 30. Breezy. New snow accumulation of 1 to 3 inches possible.
  • Monday Night Snow likely. Cloudy, with a low around 29. Breezy. Chance of precipitation is 60%. Little or no snow accumulation expected.
  • Tuesday Snow likely. Mostly cloudy, with a high near 34. Chance of precipitation is 60%.
  • Tuesday Night A 40 percent chance of snow. Mostly cloudy, with a low around 27.
  • Wednesday Snow likely. Mostly cloudy, with a high near 32. Chance of precipitation is 60%.
  • Wednesday Night A 50 percent chance of snow showers. Mostly cloudy, with a low around 26.
  • Thursday A 40 percent chance of snow showers. Mostly cloudy, with a high near 33.
  • Thursday Night A 30 percent chance of snow showers. Mostly cloudy, with a low around 24.
  • Friday A 40 percent chance of snow showers. Mostly cloudy, with a high near 34.