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

Heavy Rainfall to Bring Flooding Threat to California; Heavy Snow in the Sierra

A strong atmospheric river will bring heavy rainfall to California through the holiday week. The heaviest rainfall is expected on Wednesday in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall is expected in the Sierra Nevada from the atmospheric river, raising concerns for major snow‐load impacts. Travel may be difficult to impossible over the passes. Read More >

Current conditions at

CASTLE ROCK (TR950)

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

NA

41°F

5°C

Humidity 100%
Wind Speed NNE 3 MPH
Barometer NA
Dewpoint 41°F (5°C)
Visibility NA
Last update 24 Dec 12:09 AM PST
Extended Forecast for

17 Miles S Mossyrock WA

  • Overnight

    Overnight: Rain. Temperature rising to around 42 by 5am. North northeast wind 7 to 13 mph becoming east. Winds could gust as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 37 °F⇑

    Rain

  • Wednesday

    Wednesday: Rain likely, mainly between 7am and 2pm. Snow level 6700 feet lowering to 3700 feet in the afternoon . Mostly cloudy, with a temperature rising to near 44 by 10am, then falling to around 40 during the remainder of the day. Windy, with a south wind 20 to 29 mph, with gusts as high as 55 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 44 °F⇓

    Rain Likely
    and Windy

  • Wednesday Night

    Wednesday Night: A 30 percent chance of rain, mainly after 4am. Snow level 3500 feet. Mostly cloudy, with a low around 36. East wind around 7 mph.

    Low: 36 °F

    Chance Rain

  • Christmas Day

    Christmas Day: Rain, mainly after 10am. High near 43. Southeast wind 6 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 43 °F

    Rain

  • Thursday Night

    Thursday Night: Rain likely before 4am, then rain, possibly mixed with snow. Snow level 4100 feet lowering to 3400 feet after midnight . Low around 35. Southeast wind around 7 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

    Low: 35 °F

    Rain Likely
    then
    Rain/Snow

  • Friday

    Friday: Rain and snow. Snow level 2700 feet. High near 38. Chance of precipitation is 90%. Little or no snow accumulation expected.

    High: 38 °F

    Rain/Snow

  • Friday Night

    Friday Night: Snow likely, possibly mixed with rain, becoming all snow after 7pm. Mostly cloudy, with a low around 32. Chance of precipitation is 60%. Little or no snow accumulation expected.

    Low: 32 °F

    Rain/Snow
    Likely then
    Chance Snow

  • Saturday

    Saturday: A chance of snow, mainly before 10am. Mostly cloudy, with a high near 36.

    High: 36 °F

    Chance Snow

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 30.

    Low: 30 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Rain. Temperature rising to around 42 by 5am. North northeast wind 7 to 13 mph becoming east. Winds could gust as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Rain likely, mainly between 7am and 2pm. Snow level 6700 feet lowering to 3700 feet in the afternoon . Mostly cloudy, with a temperature rising to near 44 by 10am, then falling to around 40 during the remainder of the day. Windy, with a south wind 20 to 29 mph, with gusts as high as 55 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
A 30 percent chance of rain, mainly after 4am. Snow level 3500 feet. Mostly cloudy, with a low around 36. East wind around 7 mph.
Christmas Day
Rain, mainly after 10am. High near 43. Southeast wind 6 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Rain likely before 4am, then rain, possibly mixed with snow. Snow level 4100 feet lowering to 3400 feet after midnight . Low around 35. Southeast wind around 7 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Friday
Rain and snow. Snow level 2700 feet. High near 38. Chance of precipitation is 90%. Little or no snow accumulation expected.
Friday Night
Snow likely, possibly mixed with rain, becoming all snow after 7pm. Mostly cloudy, with a low around 32. Chance of precipitation is 60%. Little or no snow accumulation expected.
Saturday
A chance of snow, mainly before 10am. Mostly cloudy, with a high near 36.
Saturday Night
Mostly cloudy, with a low around 30.
Sunday
Mostly cloudy, with a high near 40.
Sunday Night
Mostly cloudy, with a low around 33.
Monday
Mostly cloudy, with a high near 44.
Monday Night
Mostly cloudy, with a low around 35.
Tuesday
A slight chance of rain. Partly sunny, with a high near 46.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
17 Miles S Mossyrock WA
 46.28°N 122.55°W (Elev. 2382 ft)
Last Update:
11:41 pm PST Dec 23, 2025
Forecast Valid:
12am PST Dec 24, 2025-6pm PST Dec 30, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation