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
29°F
-2°C
| Humidity | 100% |
| Wind Speed | E 1 MPH |
| Barometer | NA |
| Dewpoint | 29°F (-2°C) |
| Visibility | NA |
| Last update | 21 Jan 10:09 AM PST |
Extended Forecast for
11 Miles NW Mount St Helens WA
Today
High: 45 °F
Sunny
Tonight
Low: 33 °F
Mostly Clear
Thursday
High: 40 °F
Mostly Sunny
Thursday Night
Low: 28 °F
Partly Cloudy
Friday
High: 38 °F
Sunny
Friday Night
Low: 26 °F
Clear
Saturday
High: 41 °F
Sunny
Saturday Night
Low: 30 °F
Mostly Clear
Sunday
High: 41 °F
Mostly Sunny
then Slight
Chance Snow
Detailed Forecast
Today
Sunny, with a high near 45. East wind 5 to 8 mph becoming calm in the afternoon.
Tonight
Mostly clear, with a low around 33. East southeast wind 3 to 6 mph.
Thursday
Mostly sunny, with a high near 40. Light and variable wind.
Thursday Night
Partly cloudy, with a low around 28. Light and variable wind becoming southeast around 6 mph in the evening.
Friday
Sunny, with a high near 38. East wind 6 to 8 mph.
Friday Night
Clear, with a low around 26.
Saturday
Sunny, with a high near 41.
Saturday Night
Mostly clear, with a low around 30.
Sunday
A slight chance of snow after 4pm. Mostly sunny, with a high near 41.
Sunday Night
A chance of snow, mainly after 10pm. Mostly cloudy, with a low around 32.
Monday
A chance of rain and snow. Partly sunny, with a high near 41.
Monday Night
A chance of rain and snow. Snow level 4200 feet. Mostly cloudy, with a low around 34.
Tuesday
A slight chance of rain and snow. Snow level 4600 feet. Partly sunny, with a high near 46.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
11 Miles NW Mount St Helens WA
46.31°N 122.34°W (Elev. 3691 ft)
46.31°N 122.34°W (Elev. 3691 ft)
9:46 am PST Jan 21, 2026
10am PST Jan 21, 2026-6pm PST Jan 27, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
