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

Prolonged Atmospheric River Will Impact the Northwest Early this Week

A weather system in the Pacific Northwest will produce rain throughout the day, before a potent atmospheric river produces a prolonged round of heavy rainfall, widespread urban and river flooding, and high elevation snow to the region Monday through Wednesday. Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida today. Read More >

Hazardous Weather Conditions

Current conditions at

CANYON CREEK (CYFW1)

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

NA

46°F

8°C

Humidity 100%
Wind Speed SSE 9 MPH
Barometer NA
Dewpoint 46°F (8°C)
Visibility NA
Wind Chill41°F (5°C)
Last update 07 Dec 11:52 AM PST
Extended Forecast for

4 Miles WSW Mount St Helens WA

Flood Watch December 8, 04:00am until December 12, 04:00am
Click here for hazard details and duration
Flood Watch

  • This Afternoon

    This Afternoon: Rain. High near 43. Southwest wind 8 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 43 °F

    Rain

  • Tonight

    Tonight: Rain likely. The rain could be heavy at times. Cloudy, with a low around 42. West southwest wind 6 to 8 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 42 °F

    Heavy Rain

  • Monday

    Monday: Rain. The rain could be heavy at times. High near 47. Breezy, with a south southwest wind 10 to 17 mph, with gusts as high as 34 mph. Chance of precipitation is 100%. New precipitation amounts between 3 and 4 inches possible.

    High: 47 °F

    Heavy Rain
    and Breezy

  • Monday Night

    Monday Night: Rain. The rain could be heavy at times. Low around 38. Breezy, with a west wind 13 to 20 mph, with gusts as high as 39 mph. Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.

    Low: 38 °F

    Heavy Rain
    and Breezy

  • Tuesday

    Tuesday: Rain. Snow level 4700 feet rising to 5800 feet in the afternoon. High near 44. South wind around 6 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

    High: 44 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain. The rain could be heavy at times. Low around 40. Breezy. Chance of precipitation is 100%.

    Low: 40 °F

    Heavy Rain
    and Breezy

  • Wednesday

    Wednesday: Rain. The rain could be heavy at times. High near 46. Chance of precipitation is 100%.

    High: 46 °F

    Heavy Rain

  • Wednesday Night

    Wednesday Night: Rain before 10pm, then rain likely, possibly mixed with snow. Mostly cloudy, with a low around 38.

    Low: 38 °F

    Rain/Snow

  • Thursday

    Thursday: Rain likely, possibly mixed with snow. Mostly cloudy, with a high near 43.

    High: 43 °F

    Rain/Snow
    Likely

Detailed Forecast

This Afternoon
Rain. High near 43. Southwest wind 8 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Tonight
Rain likely. The rain could be heavy at times. Cloudy, with a low around 42. West southwest wind 6 to 8 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts between a half and three quarters of an inch possible.
Monday
Rain. The rain could be heavy at times. High near 47. Breezy, with a south southwest wind 10 to 17 mph, with gusts as high as 34 mph. Chance of precipitation is 100%. New precipitation amounts between 3 and 4 inches possible.
Monday Night
Rain. The rain could be heavy at times. Low around 38. Breezy, with a west wind 13 to 20 mph, with gusts as high as 39 mph. Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.
Tuesday
Rain. Snow level 4700 feet rising to 5800 feet in the afternoon. High near 44. South wind around 6 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.
Tuesday Night
Rain. The rain could be heavy at times. Low around 40. Breezy. Chance of precipitation is 100%.
Wednesday
Rain. The rain could be heavy at times. High near 46. Chance of precipitation is 100%.
Wednesday Night
Rain before 10pm, then rain likely, possibly mixed with snow. Mostly cloudy, with a low around 38.
Thursday
Rain likely, possibly mixed with snow. Mostly cloudy, with a high near 43.
Thursday Night
Rain likely, possibly mixed with snow before 1am, then a chance of rain. Mostly cloudy, with a low around 42.
Friday
A chance of rain. Mostly cloudy, with a high near 46.
Friday Night
A chance of rain. Mostly cloudy, with a low around 42.
Saturday
A chance of rain. Partly sunny, with a high near 46.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WSW Mount St Helens WA
 46.17°N 122.27°W (Elev. 3166 ft)
Last Update:
12:00 pm PST Dec 7, 2025
Forecast Valid:
12pm PST Dec 7, 2025-6pm PST Dec 13, 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