National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds in the North-Central U.S.

A prolonged atmospheric river will continue impacting the Pacific Northwest with heavy rainfall which has lead to areas of urban and river flooding along with gusty winds into Thursday. A clipper will bring heavy snow, some mixed wintry precipitation, and gusty to high winds across the northern Plains, Upper Midwest, and the Great Lakes into Thursday morning. Read More >

Hazardous Weather Conditions

Current conditions at

CANYON CREEK (CYFW1)

Lat: 45.92944°NLon: 122.20278°WElev: 2592.0ft.

NA

41°F

5°C

Humidity 100%
Wind Speed NNW 0 MPH
Barometer NA
Dewpoint 41°F (5°C)
Visibility NA
Last update 09 Dec 11:52 AM PST
Extended Forecast for

Mount St Helens WA

Flood Watch December 9, 12:07pm until December 11, 04:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch December 9, 12:07pm until December 11, 04:00pm

    NOW until 4:00pm Thu

    Flood Watch

  • This Afternoon

    High: 38 °F

    Rain/Snow

  • Tonight

    Tonight: Rain. The rain could be heavy at times. Temperature rising to around 39 by 11pm. Very windy, with a southwest wind 23 to 33 mph, with gusts as high as 44 mph. Chance of precipitation is 100%. New precipitation amounts between 3 and 4 inches possible.

    Low: 34 °F⇑

    Heavy Rain
    and Very
    Windy

  • Wednesday

    Wednesday: Rain. The rain could be heavy at times. High near 39. Very windy, with a southwest wind 25 to 30 mph, with gusts as high as 41 mph. Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.

    High: 39 °F

    Heavy Rain
    and Very
    Windy

  • Wednesday Night

    Wednesday Night: Rain. Snow level 8300 feet. Low around 37. Windy, with a west southwest wind around 26 mph, with gusts as high as 36 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

    Low: 37 °F

    Rain and
    Windy

  • Thursday

    Thursday: Rain before 10am, then rain and snow. Snow level 7700 feet. High near 40. Breezy, with a west wind 16 to 21 mph decreasing to 10 to 15 mph in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

    High: 40 °F

    Rain/Snow and
    Breezy

  • Thursday Night

    Thursday Night: Rain and snow likely before 1am, then a chance of rain. Snow level 7300 feet. Mostly cloudy, with a low around 37. Chance of precipitation is 70%. Little or no snow accumulation expected.

    Low: 37 °F

    Rain/Snow
    Likely then
    Chance
    Rain/Snow

  • Friday

    Friday: A chance of rain before 10am, then a chance of rain and snow. Snow level 6800 feet. Mostly cloudy, with a high near 39. Chance of precipitation is 50%. Little or no snow accumulation expected.

    High: 39 °F

    Chance
    Rain/Snow

  • Friday Night

    Friday Night: A chance of snow, mainly before 10pm. Mostly cloudy, with a low around 33.

    Low: 33 °F

    Chance Snow

Detailed Forecast

This Afternoon
Rain, possibly mixed with snow. Snow level 6700 feet rising to 8700 feet. High near 38. Southwest wind around 10 mph. Chance of precipitation is 100%. Total daytime snow accumulation of 1 to 3 inches possible.
Tonight
Rain. The rain could be heavy at times. Temperature rising to around 39 by 11pm. Very windy, with a southwest wind 23 to 33 mph, with gusts as high as 44 mph. Chance of precipitation is 100%. New precipitation amounts between 3 and 4 inches possible.
Wednesday
Rain. The rain could be heavy at times. High near 39. Very windy, with a southwest wind 25 to 30 mph, with gusts as high as 41 mph. Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.
Wednesday Night
Rain. Snow level 8300 feet. Low around 37. Windy, with a west southwest wind around 26 mph, with gusts as high as 36 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.
Thursday
Rain before 10am, then rain and snow. Snow level 7700 feet. High near 40. Breezy, with a west wind 16 to 21 mph decreasing to 10 to 15 mph in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.
Thursday Night
Rain and snow likely before 1am, then a chance of rain. Snow level 7300 feet. Mostly cloudy, with a low around 37. Chance of precipitation is 70%. Little or no snow accumulation expected.
Friday
A chance of rain before 10am, then a chance of rain and snow. Snow level 6800 feet. Mostly cloudy, with a high near 39. Chance of precipitation is 50%. Little or no snow accumulation expected.
Friday Night
A chance of snow, mainly before 10pm. Mostly cloudy, with a low around 33.
Saturday
A chance of snow, mainly after 10am. Partly sunny, with a high near 38.
Saturday Night
Snow. Mostly cloudy, with a low around 32. Breezy.
Sunday
Snow. Mostly cloudy, with a high near 34. Breezy.
Sunday Night
Snow. Mostly cloudy, with a low around 32. Breezy.
Monday
Snow. The snow could be heavy at times. Cloudy, with a high near 37. Windy.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mount St Helens WA
 46.2°N 122.21°W (Elev. 6598 ft)
Last Update:
11:41 am PST Dec 9, 2025
Forecast Valid:
12pm PST Dec 9, 2025-6pm PST Dec 15, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation