Want to revisit 2025? Here's our year-end climate summary!

Our annual climate summary for Portland has been posted. Additional summaries for Astoria, Eugene, and Salem are available. For other climate summaries, visit our Observed Weather tab on our climate page. Read More >

Current conditions at

CASTLE ROCK (TR950)

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

NA

40°F

4°C

Humidity 66%
Wind Speed S 1 MPH
Barometer NA
Dewpoint 29°F (-2°C)
Visibility NA
Last update 25 Jan 12:09 PM PST
Extended Forecast for

11 Miles NW Mount St Helens WA

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 41. Southeast wind 3 to 5 mph.

    High: 41 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 34. Southeast wind around 9 mph.

    Low: 34 °F

    Mostly Cloudy

  • Monday

    Monday: A slight chance of snow between 10am and 2pm.  Partly sunny, with a high near 40. South wind around 7 mph.  Chance of precipitation is 20%.

    High: 40 °F

    Slight Chance
    Snow

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 37. Southeast wind 7 to 10 mph.

    Low: 37 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of rain after 4pm.  Snow level 4400 feet. Mostly cloudy, with a high near 44. Southeast wind 10 to 14 mph, with gusts as high as 20 mph.

    High: 44 °F

    Mostly Cloudy
    then Chance
    Rain

  • Tuesday Night

    Tuesday Night: A chance of rain and snow before 10pm, then rain likely.  Snow level 4400 feet rising to 4900 feet after midnight. Mostly cloudy, with a low around 37. Chance of precipitation is 60%. Little or no snow accumulation expected.

    Low: 37 °F

    Rain/Snow
    Likely then
    Rain Likely

  • Wednesday

    Wednesday: Rain likely.  Snow level 5000 feet. Mostly cloudy, with a high near 41. Chance of precipitation is 70%.

    High: 41 °F

    Rain Likely

  • Wednesday Night

    Wednesday Night: Rain.  Snow level 5400 feet. Mostly cloudy, with a low around 39.

    Low: 39 °F

    Rain

  • Thursday

    Thursday: Rain.  Snow level 5900 feet. Mostly cloudy, with a high near 42.

    High: 42 °F

    Rain

Detailed Forecast

This Afternoon
Partly sunny, with a high near 41. Southeast wind 3 to 5 mph.
Tonight
Mostly cloudy, with a low around 34. Southeast wind around 9 mph.
Monday
A slight chance of snow between 10am and 2pm. Partly sunny, with a high near 40. South wind around 7 mph. Chance of precipitation is 20%.
Monday Night
Mostly cloudy, with a low around 37. Southeast wind 7 to 10 mph.
Tuesday
A 30 percent chance of rain after 4pm. Snow level 4400 feet. Mostly cloudy, with a high near 44. Southeast wind 10 to 14 mph, with gusts as high as 20 mph.
Tuesday Night
A chance of rain and snow before 10pm, then rain likely. Snow level 4400 feet rising to 4900 feet after midnight. Mostly cloudy, with a low around 37. Chance of precipitation is 60%. Little or no snow accumulation expected.
Wednesday
Rain likely. Snow level 5000 feet. Mostly cloudy, with a high near 41. Chance of precipitation is 70%.
Wednesday Night
Rain. Snow level 5400 feet. Mostly cloudy, with a low around 39.
Thursday
Rain. Snow level 5900 feet. Mostly cloudy, with a high near 42.
Thursday Night
Rain likely, mainly before 10pm. Mostly cloudy, with a low around 41.
Friday
Rain likely. Mostly cloudy, with a high near 47.
Friday Night
Rain likely. Mostly cloudy, with a low around 42.
Saturday
Rain likely. Mostly cloudy, with a high near 47.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
11 Miles NW Mount St Helens WA
 46.31°N 122.34°W (Elev. 3691 ft)
1:02 pm PST Jan 25, 2026
1pm PST Jan 25, 2026-6pm PST Jan 31, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database