National Weather Service United States Department of Commerce

Cold Front Crossing the Central U.S.

A cold front over the Northern Rockies will move eastward to the Upper Mississippi Valley/Central Plains by Monday. Rain will develop along the boundary over the Upper Midwest and move into the Upper Great Lakes by Monday. Some of the thunderstorms could become severe in portions of Texas through Monday.
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Current Conditions

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Mount St Helens WA

7 Day Forecast

Portland, OR

NWS Weather Forecast Office

This
Afternoon

Partly Sunny

Partly
Sunny

High: 50 °F

Tonight

Mostly Cloudy

Mostly
Cloudy

Low: 40 °F

Monday

Chance Snow Chance for Measurable Precipitation 40%

Chance
Snow

High: 50 °F

Monday
Night

Snow Chance for Measurable Precipitation 80%

Snow

Low: 33 °F

Tuesday

Snow Chance for Measurable Precipitation 80%

Snow

High: 38 °F

Tuesday
Night

Chance Snow Chance for Measurable Precipitation 50%

Chance
Snow

Low: 25 °F

Wednesday

Snow Likely Chance for Measurable Precipitation 60%

Snow
Likely

High: 39 °F

Wednesday
Night

Snow Likely

Snow
Likely

Low: 30 °F

Thursday

Snow

Snow

High: 36 °F

Detailed Forecast

  • This Afternoon Partly sunny, with a high near 50. South wind around 9 mph.
  • Tonight Mostly cloudy, with a low around 40. Southeast wind 5 to 8 mph.
  • Monday A 40 percent chance of snow showers, mainly after 11am. Mostly cloudy, with a high near 50. South wind 9 to 15 mph. Little or no snow accumulation expected.
  • Monday Night Snow showers. Low around 33. West southwest wind 10 to 13 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
  • Tuesday Snow showers. High near 38. West northwest wind around 11 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
  • Tuesday Night A 50 percent chance of snow showers. Mostly cloudy, with a low around 25. Little or no snow accumulation expected.
  • Wednesday Snow likely. Mostly cloudy, with a high near 39. Chance of precipitation is 60%. Little or no snow accumulation expected.
  • Wednesday Night Snow likely. Cloudy, with a low around 30.
  • Thursday Snow. Cloudy, with a high near 36.
  • Thursday Night Snow showers likely. Cloudy, with a low around 29.
  • Friday A chance of snow showers. Cloudy, with a high near 37.
  • Friday Night Snow showers likely. Cloudy, with a low around 27.
  • Saturday Snow showers likely. Cloudy, with a high near 31.

 

Additional Forecasts and Information

Zone Area Forecast for South Washington Cascades, WA