Winter Weather in the Eastern U.S.; Heavy Rains Begin Across the Southern Plains into the Ohio Valley

A wintry mix may impact travel across portions of the Mid-Atlantic through the morning and the Northeast U.S. through Tuesday. Heavy rain and thunderstorms may cause a flooding threat across the Southern Plains into the Ohio Valley beginning Tuesday. Fire weather concerns will continue across portions of the central and southern High Plains through Wednesday. Read More >

Current conditions at

CASTLE ROCK (TR950)

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

NA

43°F

6°C

Humidity 100%
Wind Speed ESE 0 MPH
Barometer NA
Dewpoint 43°F (6°C)
Visibility NA
Last update 02 Mar 09:09 PM PST
Extended Forecast for

11 Miles NW Mount St Helens WA

  • Tonight

    Tonight: A 30 percent chance of rain after 4am.  Snow level 5700 feet. Mostly cloudy, with a low around 39. South southeast wind around 7 mph.

    Low: 39 °F

    Mostly Cloudy
    then Chance
    Rain

  • Tuesday

    Tuesday: Rain.  Snow level 5300 feet. High near 41. South southwest wind around 8 mph.  Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 41 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain.  Snow level 4900 feet. Low around 37. South wind around 9 mph.  Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 37 °F

    Rain

  • Wednesday

    Wednesday: Rain, possibly mixed with snow showers. Some thunder is also possible.  Snow level 4000 feet. High near 39. West southwest wind 7 to 9 mph.  Chance of precipitation is 100%. Little or no snow accumulation expected.

    High: 39 °F

    Rain/Snow

  • Wednesday Night

    Wednesday Night: Snow showers.  Low around 33. West wind 7 to 9 mph.  Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

    Low: 33 °F

    Snow Showers

  • Thursday

    Thursday: Snow.  High near 37. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.

    High: 37 °F

    Snow

  • Thursday Night

    Thursday Night: Snow, mainly before 4am.  Low around 35. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    Low: 35 °F

    Snow

  • Friday

    Friday: Rain before 7am, then rain and snow between 7am and 1pm, then rain after 1pm.  Snow level 4100 feet rising to 4800 feet in the afternoon. Cloudy, with a high near 40.

    High: 40 °F

    Rain/Snow

  • Friday Night

    Friday Night: Rain likely.  Mostly cloudy, with a low around 39.

    Low: 39 °F

    Rain Likely

Detailed Forecast

Tonight
A 30 percent chance of rain after 4am. Snow level 5700 feet. Mostly cloudy, with a low around 39. South southeast wind around 7 mph.
Tuesday
Rain. Snow level 5300 feet. High near 41. South southwest wind around 8 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday Night
Rain. Snow level 4900 feet. Low around 37. South wind around 9 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Wednesday
Rain, possibly mixed with snow showers. Some thunder is also possible. Snow level 4000 feet. High near 39. West southwest wind 7 to 9 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.
Wednesday Night
Snow showers. Low around 33. West wind 7 to 9 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.
Thursday
Snow. High near 37. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.
Thursday Night
Snow, mainly before 4am. Low around 35. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Friday
Rain before 7am, then rain and snow between 7am and 1pm, then rain after 1pm. Snow level 4100 feet rising to 4800 feet in the afternoon. Cloudy, with a high near 40.
Friday Night
Rain likely. Mostly cloudy, with a low around 39.
Saturday
Rain. Mostly cloudy, with a high near 43.
Saturday Night
Rain likely. Mostly cloudy, with a low around 40.
Sunday
Rain likely. Snow level 5000 feet. Mostly cloudy, with a high near 43.
Sunday Night
Rain and snow likely. Snow level 4300 feet lowering to 3700 feet after midnight . Mostly cloudy, with a low around 34.
Monday
Snow. Cloudy, with a high near 36. Breezy.
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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)
9:41 pm PST Mar 2, 2026
10pm PST Mar 2, 2026-6pm PDT Mar 9, 2026
 
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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