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

Tracking Two Storms Impacting the Northern U.S. Through Thanksgiving and into This Weekend

Heavy lake effect snow, gusty winds, and localized blizzard conditions will persist through Thanksgiving near and downwind of the Great Lakes. Rain and mountain snow are forecast for the Pacific Northwest. Confidence is increasing for another winter storm to develop over the northern and central Rockies Friday and track across the central Plains through the Midwest and Great Lakes this weekend. Read More >

Current conditions at

CASTLE ROCK (TR950)

Lat: 46.27139°NLon: 122.89194°WElev: 213.0ft.

NA

52°F

11°C

Humidity 100%
Wind Speed S 2 MPH
Barometer NA
Dewpoint 52°F (11°C)
Visibility NA
Last update 27 Nov 11:09 PM PST
Extended Forecast for

11 Miles NW Mount St Helens WA

  • Overnight

    Overnight: Rain, mainly before 5am. Low around 39. Breezy, with a west southwest wind 9 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 39 °F

    Rain and
    Breezy

  • Friday

    Friday: A chance of rain before 11am, then a slight chance of rain after 3pm. Snow level 5500 feet. Cloudy, then gradually becoming mostly sunny, with a high near 42. North northeast wind around 6 mph becoming calm in the morning. Chance of precipitation is 30%.

    High: 42 °F

    Chance Rain

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 33. East southeast wind 6 to 14 mph, with gusts as high as 18 mph.

    Low: 33 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 30 percent chance of snow after 10am. Mostly cloudy, with a high near 37. Southeast wind 5 to 13 mph. New snow accumulation of less than a half inch possible.

    High: 37 °F

    Chance Snow

  • Saturday Night

    Saturday Night: A 30 percent chance of snow before 10pm. Mostly cloudy, with a low around 30. East southeast wind around 6 mph. New snow accumulation of less than a half inch possible.

    Low: 30 °F

    Chance Snow
    then Partly
    Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 38.

    High: 38 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A slight chance of rain and snow after 4am. Mostly cloudy, with a low around 32. Chance of precipitation is 10%.

    Low: 32 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

  • Monday

    Monday: A chance of rain and snow, mainly after 10am. Snow level 4300 feet rising to 5300 feet in the afternoon. Mostly cloudy, with a high near 38.

    High: 38 °F

    Chance
    Rain/Snow

  • Monday Night

    Monday Night: Rain likely, possibly mixed with snow, becoming all rain after 4am. Snow level 5300 feet. Mostly cloudy, with a low around 36.

    Low: 36 °F

    Rain/Snow
    Likely

Detailed Forecast

Overnight
Rain, mainly before 5am. Low around 39. Breezy, with a west southwest wind 9 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Friday
A chance of rain before 11am, then a slight chance of rain after 3pm. Snow level 5500 feet. Cloudy, then gradually becoming mostly sunny, with a high near 42. North northeast wind around 6 mph becoming calm in the morning. Chance of precipitation is 30%.
Friday Night
Mostly cloudy, with a low around 33. East southeast wind 6 to 14 mph, with gusts as high as 18 mph.
Saturday
A 30 percent chance of snow after 10am. Mostly cloudy, with a high near 37. Southeast wind 5 to 13 mph. New snow accumulation of less than a half inch possible.
Saturday Night
A 30 percent chance of snow before 10pm. Mostly cloudy, with a low around 30. East southeast wind around 6 mph. New snow accumulation of less than a half inch possible.
Sunday
Mostly sunny, with a high near 38.
Sunday Night
A slight chance of rain and snow after 4am. Mostly cloudy, with a low around 32. Chance of precipitation is 10%.
Monday
A chance of rain and snow, mainly after 10am. Snow level 4300 feet rising to 5300 feet in the afternoon. Mostly cloudy, with a high near 38.
Monday Night
Rain likely, possibly mixed with snow, becoming all rain after 4am. Snow level 5300 feet. Mostly cloudy, with a low around 36.
Tuesday
Rain likely before 7am, then rain likely, possibly mixed with snow. Snow level 4600 feet. Mostly cloudy, with a high near 37.
Tuesday Night
A chance of rain and snow. Snow level 3800 feet. Mostly cloudy, with a low around 32.
Wednesday
A slight chance of rain and snow. Patchy fog. Snow level 3700 feet. Otherwise, mostly cloudy, with a high near 37.
Wednesday Night
A chance of rain and snow. Patchy fog. Snow level 4400 feet. Otherwise, mostly cloudy, with a low around 34.
Thursday
A chance of rain and snow. Snow level 5000 feet rising to 5900 feet in the afternoon. Mostly cloudy, with a high near 38.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
11 Miles NW Mount St Helens WA
 46.31°N 122.34°W (Elev. 3691 ft)
Last Update:
11:41 pm PST Nov 27, 2025
Forecast Valid:
12am PST Nov 28, 2025-6pm PST Dec 4, 2025
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation