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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10 Miles ESE Sumpter OR

7 Day Forecast

For More Weather Information:

Boise, ID Local Forecast Office

Overnight

Rain Likely Chance for Measurable Precipitation 60%

Rain
Likely

Low: 35 °F

Saturday

Rain/Snow Likely Chance for Measurable Precipitation 70%

Rain/Snow
Likely

High: 37 °FFalling Temperatures

Saturday
Night

Slight Chance Snow Chance for Measurable Precipitation 20%

Slight Chc
Snow

Low: 11 °F

Sunday

Sunny

Sunny

High: 30 °F

Sunday
Night

Slight Chance Snow Chance for Measurable Precipitation 20%

Slight Chc
Snow

Low: 10 °F

Monday

Chance Snow Chance for Measurable Precipitation 40%

Chance
Snow

High: 33 °F

Monday
Night

Chance Rain/Snow Chance for Measurable Precipitation 40%

Chance
Rain/Snow

Low: 27 °F

Tuesday

Chance Rain Chance for Measurable Precipitation 40%

Chance
Rain

High: 39 °F

Tuesday
Night

Chance Rain Chance for Measurable Precipitation 30%

Chance
Rain

Low: 26 °F

Detailed Forecast

  • Overnight Rain likely, mainly after 4am. Mostly cloudy, with a low around 35. Southwest wind around 10 mph. Chance of precipitation is 60%.
  • Saturday Rain likely before 10am, then a slight chance of snow. Mostly cloudy, with a temperature rising to near 37 by 10am, then falling to around 28 during the remainder of the day. West northwest wind around 10 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
  • Saturday Night A 20 percent chance of snow showers before 10pm. Partly cloudy, with a low around 11. Northwest wind around 5 mph becoming calm in the evening.
  • Sunday Sunny, with a high near 30. Light and variable wind.
  • Sunday Night A 20 percent chance of snow after 10pm. Partly cloudy, with a low around 10. Light south southeast wind.
  • Monday A chance of snow. Mostly cloudy, with a high near 33. Chance of precipitation is 40%. New snow accumulation of around an inch possible.
  • Monday Night A chance of rain and snow. Cloudy, with a low around 27. Chance of precipitation is 40%. Little or no snow accumulation expected.
  • Tuesday A 40 percent chance of rain. Mostly cloudy, with a high near 39.
  • Tuesday Night A 30 percent chance of rain. Mostly cloudy, with a low around 26.
  • Wednesday A 50 percent chance of rain. Mostly cloudy, with a high near 39.
  • Wednesday Night A 30 percent chance of showers. Mostly cloudy, with a low around 28.
  • Thursday A 30 percent chance of showers. Mostly cloudy, with a high near 41.
  • Thursday Night A 30 percent chance of showers. Mostly cloudy, with a low around 28.
  • Friday A 30 percent chance of showers. Mostly cloudy, with a high near 41.