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

Montague Siskiyou County Airport (KSIY)

Lat: 41.77375°NLon: 122.46817°WElev: 2644.0ft.

Overcast

45°F

7°C

Humidity 81%
Wind Speed S 24 MPH
Barometer 29.47 in (997.97 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Wind Chill36°F (2°C)
Last update 25 Dec 07:35 AM PST
Extended Forecast for

Yreka CA

High Wind Warning until December 25, 01:00pm
Click here for hazard details and duration
High Wind Warning
  •  
    High Wind Warning until December 25, 01:00pm

    NOW until 1:00pm Thu

    High Wind Warning

  • Christmas Day

    High: 45 °F

    Showers and
    Breezy

  • Tonight

    Tonight: Rain and snow showers, becoming all rain after 11pm.  Snow level 3900 feet. Low around 32. East southeast wind 3 to 6 mph.  Chance of precipitation is 90%. Little or no snow accumulation expected.

    Low: 32 °F

    Rain/Snow
    then Showers
    Likely

  • Friday

    Friday: Showers likely before 10am, then rain, mainly between 10am and 4pm.  Snow level 3900 feet. High near 44. Light and variable wind becoming south 8 to 13 mph in the morning. Winds could gust as high as 20 mph.  Chance of precipitation is 80%.

    High: 44 °F

    Rain

  • Friday Night

    Friday Night: A 40 percent chance of rain before 10pm.  Snow level 3600 feet lowering to 2700 feet after midnight . Mostly cloudy, with a low around 27. Light west wind.

    Low: 27 °F

    Chance Rain
    then Mostly
    Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 40. Light north northwest wind.

    High: 40 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 22.

    Low: 22 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 40.

    High: 40 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 21.

    Low: 21 °F

    Mostly Clear

Detailed Forecast

Christmas Day
Showers, mainly before 3pm. Snow level 4900 feet lowering to 4400 feet. High near 45. Breezy, with a south wind 20 to 23 mph, with gusts as high as 39 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Tonight
Rain and snow showers, becoming all rain after 11pm. Snow level 3900 feet. Low around 32. East southeast wind 3 to 6 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Friday
Showers likely before 10am, then rain, mainly between 10am and 4pm. Snow level 3900 feet. High near 44. Light and variable wind becoming south 8 to 13 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 80%.
Friday Night
A 40 percent chance of rain before 10pm. Snow level 3600 feet lowering to 2700 feet after midnight . Mostly cloudy, with a low around 27. Light west wind.
Saturday
Partly sunny, with a high near 40. Light north northwest wind.
Saturday Night
Mostly cloudy, with a low around 22.
Sunday
Partly sunny, with a high near 40.
Sunday Night
Mostly clear, with a low around 21.
Monday
Sunny, with a high near 43.
Monday Night
Mostly clear, with a low around 26.
Tuesday
Sunny, with a high near 47.
Tuesday Night
Mostly clear, with a low around 27.
Wednesday
Sunny, with a high near 48.
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ABOUT THIS FORECAST

 
Point Forecast:
Yreka CA
 41.75°N 122.62°W (Elev. 2726 ft)
6:52 am PST Dec 25, 2025
7am PST Dec 25, 2025-6pm PST Dec 31, 2025
 
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Additional Resources

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