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

Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas

A strong atmospheric river will continue heavy rain over southern California through Friday. The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will continue through Friday. Travel will become increasingly difficult over the passes due to snow and strong winds. Read More >

Current conditions at

Mount Shasta (KMHS)

Lat: 41.31494°NLon: 122.31702°WElev: 3540.0ft.

rain,mist

37°F

3°C

Humidity 88%
Wind Speed NA 5 MPH
Barometer 29.6 in (1002.37 mb)
Dewpoint 34°F (1°C)
Visibility 4.00 mi
Wind Chill33°F (1°C)
Last update 25 Dec 06:56 PM PST
Extended Forecast for

Weed CA

  • Tonight

    Tonight: Rain and snow showers. Snow level 3900 feet. Low around 31. Breezy, with a south southeast wind 20 to 22 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 1 to 2 inches possible.

    Low: 31 °F

    Rain/Snow and
    Breezy

  • Friday

    Friday: Rain and snow showers, mainly before 2pm. Snow level 4000 feet. High near 39. Breezy, with a south southeast wind 14 to 19 mph increasing to 23 to 28 mph. Winds could gust as high as 41 mph. Chance of precipitation is 90%. New snow accumulation of around an inch possible.

    High: 39 °F

    Rain/Snow and
    Breezy

  • Friday Night

    Friday Night: Snow likely, possibly mixed with rain before 10pm, then a slight chance of snow. Mostly cloudy, with a low around 25. Southwest wind around 6 mph becoming north northwest after midnight. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 25 °F

    Rain/Snow
    Likely then
    Slight Chance
    Snow

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 35. North northwest wind 3 to 6 mph.

    High: 35 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 20. Northeast wind around 6 mph.

    Low: 20 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 39.

    High: 39 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 23.

    Low: 23 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 42.

    High: 42 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 28.

    Low: 28 °F

    Partly Cloudy

Detailed Forecast

Tonight
Rain and snow showers. Snow level 3900 feet. Low around 31. Breezy, with a south southeast wind 20 to 22 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 1 to 2 inches possible.
Friday
Rain and snow showers, mainly before 2pm. Snow level 4000 feet. High near 39. Breezy, with a south southeast wind 14 to 19 mph increasing to 23 to 28 mph. Winds could gust as high as 41 mph. Chance of precipitation is 90%. New snow accumulation of around an inch possible.
Friday Night
Snow likely, possibly mixed with rain before 10pm, then a slight chance of snow. Mostly cloudy, with a low around 25. Southwest wind around 6 mph becoming north northwest after midnight. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 35. North northwest wind 3 to 6 mph.
Saturday Night
Partly cloudy, with a low around 20. Northeast wind around 6 mph.
Sunday
Mostly sunny, with a high near 39.
Sunday Night
Mostly clear, with a low around 23.
Monday
Sunny, with a high near 42.
Monday Night
Partly cloudy, with a low around 28.
Tuesday
Sunny, with a high near 47.
Tuesday Night
Mostly clear, with a low around 30.
Wednesday
Mostly sunny, with a high near 48.
Wednesday Night
Mostly cloudy, with a low around 31.
New Year's Day
A chance of rain. Snow level 5000 feet. Partly sunny, with a high near 45.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Weed CA
 41.42°N 122.39°W (Elev. 3560 ft)
Last Update:
4:21 pm PST Dec 25, 2025
Forecast Valid:
7pm PST Dec 25, 2025-6pm PST Jan 1, 2026
 
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