Winter Returns Across the Northern Tier; Record Warmth for the Southwest

A large high pressure system will usher in cold air for this first day of March across the northern Plains, Great Lakes, Northeast and mid-Atlantic. Some wintry precipitation may evolve across the mid-Mississippi Valley, Ohio Valley and mid-Atlantic through Monday. Meanwhile, record warmth will spread across the Southwest, southern Plains through early this week. Read More >

Current conditions at

CASTLE ROCK (TR950)

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

NA

31°F

-1°C

Humidity 100%
Wind Speed ESE 0 MPH
Barometer NA
Dewpoint 31°F (-1°C)
Visibility NA
Last update 02 Mar 06:09 AM PST
Extended Forecast for

11 Miles NW Mount St Helens WA

  • Today

    Today: Mostly sunny, with a high near 47. Calm wind becoming west southwest around 6 mph in the afternoon.

    High: 47 °F

    Mostly Sunny

  • Tonight

    Tonight: A slight chance of rain before 10pm, then rain likely after 2am.  Snow level 5400 feet. Increasing clouds, with a low around 39. South wind 5 to 7 mph.  Chance of precipitation is 60%.

    Low: 39 °F

    Slight Chance
    Rain then
    Rain Likely

  • Tuesday

    Tuesday: Rain.  Snow level 5200 feet. High near 41. South southwest wind 7 to 9 mph.  Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 41 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain.  Snow level 4800 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: Snow, possibly mixed with rain.  Snow level 3900 feet. High near 39. West southwest wind 9 to 11 mph, with gusts as high as 18 mph.  Chance of precipitation is 100%. Little or no snow accumulation expected.

    High: 39 °F

    Rain/Snow

  • Wednesday Night

    Wednesday Night: Snow, possibly mixed with rain, becoming all snow after 7pm.  Low around 34. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

    Low: 34 °F

    Rain/Snow
    then Snow
    Likely

  • Thursday

    Thursday: Snow before 4pm, then rain and snow.  High near 37. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.

    High: 37 °F

    Snow then
    Rain/Snow

  • Thursday Night

    Thursday Night: Rain and snow before 7pm, then snow between 7pm and 1am, then rain likely after 1am.  Snow level 3800 feet. Mostly cloudy, with a low around 36.

    Low: 36 °F

    Rain/Snow

  • Friday

    Friday: Rain.  Snow level 4300 feet rising to 5000 feet in the afternoon. Mostly cloudy, with a high near 41.

    High: 41 °F

    Rain

Detailed Forecast

Today
Mostly sunny, with a high near 47. Calm wind becoming west southwest around 6 mph in the afternoon.
Tonight
A slight chance of rain before 10pm, then rain likely after 2am. Snow level 5400 feet. Increasing clouds, with a low around 39. South wind 5 to 7 mph. Chance of precipitation is 60%.
Tuesday
Rain. Snow level 5200 feet. High near 41. South southwest wind 7 to 9 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday Night
Rain. Snow level 4800 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
Snow, possibly mixed with rain. Snow level 3900 feet. High near 39. West southwest wind 9 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.
Wednesday Night
Snow, possibly mixed with rain, becoming all snow after 7pm. Low around 34. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.
Thursday
Snow before 4pm, then rain and snow. High near 37. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.
Thursday Night
Rain and snow before 7pm, then snow between 7pm and 1am, then rain likely after 1am. Snow level 3800 feet. Mostly cloudy, with a low around 36.
Friday
Rain. Snow level 4300 feet rising to 5000 feet in the afternoon. Mostly cloudy, with a high near 41.
Friday Night
Rain likely. Mostly cloudy, with a low around 40.
Saturday
Rain likely. Mostly cloudy, with a high near 42.
Saturday Night
Rain and snow likely. Snow level 6000 feet lowering to 4800 feet after midnight . Mostly cloudy, with a low around 37.
Sunday
Snow. Mostly cloudy, with a high near 39.
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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)
6:41 am PST Mar 2, 2026
6am PST Mar 2, 2026-6pm PDT Mar 8, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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