National Weather Service United States Department of Commerce

Winter storm for Rockies and High Plains

A storm system over the northern Rockies will move eastward towards the High Plains by Christmas Day. The system will produce snow over parts of the Great Basin, Rockies and High Plains on Christmas. Some of the snow will be heavy, with hazardous travel conditions. Winter Storm Warnings and Winter Weather Advisories are in effect in these areas.
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Current Conditions

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11 Miles NW Mount St Helens WA

7 Day Forecast

For More Weather Information:

Portland, OR Local Forecast Office

Christmas
Day

Chance Snow Chance for Measurable Precipitation 30%

Chance
Snow

High: 32 °F

Tonight

Slight Chance Snow Chance for Measurable Precipitation 20%

Slight Chc
Snow

Low: 27 °F

Friday

Slight Chance Snow Chance for Measurable Precipitation 20%

Slight Chc
Snow

High: 34 °F

Friday
Night

Chance Snow Chance for Measurable Precipitation 30%

Chance
Snow

Low: 30 °F

Saturday

Snow Chance for Measurable Precipitation 80%

Snow

High: 36 °F

Saturday
Night

Snow Likely Chance for Measurable Precipitation 70%

Snow
Likely

Low: 29 °F

Sunday

Chance Snow Chance for Measurable Precipitation 30%

Chance
Snow

High: 31 °F

Sunday
Night

Mostly Cloudy

Mostly
Cloudy

Low: 15 °F

Monday

Mostly Sunny

Mostly
Sunny

High: 29 °F

Detailed Forecast

  • Christmas Day Scattered snow showers, mainly before 4pm. Mostly cloudy, with a high near 32. West northwest wind 10 to 14 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. Total daytime snow accumulation of less than a half inch possible.
  • Tonight A 20 percent chance of snow showers. Mostly cloudy, with a low around 27. West northwest wind 6 to 8 mph.
  • Friday A 20 percent chance of snow showers. Mostly cloudy, with a high near 34. Light west northwest wind.
  • Friday Night A 30 percent chance of snow showers, mainly after 10pm. Mostly cloudy, with a low around 30. Calm wind becoming west around 5 mph in the evening. New snow accumulation of around an inch possible.
  • Saturday Snow showers. High near 36. West southwest 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 80%. New snow accumulation of 1 to 2 inches possible.
  • Saturday Night Snow showers likely. Mostly cloudy, with a low around 29. Breezy. Chance of precipitation is 70%. New snow accumulation of 2 to 4 inches possible.
  • Sunday A 30 percent chance of snow showers. Mostly cloudy, with a high near 31. New snow accumulation of less than one inch possible.
  • Sunday Night Mostly cloudy, with a low around 15.
  • Monday Mostly sunny, with a high near 29.
  • Monday Night Mostly clear, with a low around 21.
  • Tuesday Sunny, with a high near 29.
  • Tuesday Night Partly cloudy, with a low around 25.
  • Wednesday Sunny, with a high near 35.