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

Eureka WFO (EKA01)

Lat: 40.8098°NLon: 124.1602°WElev: 20.0ft.

Rain

46°F

8°C

Humidity NA
Wind Speed SE 10 MPH
Barometer NA
Dewpoint N/A
Visibility 7.00 mi
Wind Chill41°F (5°C)
Last update NA
Extended Forecast for

Arcata CA

Flood Watch December 26, 01:01am until December 26, 10:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch December 26, 01:01am until December 26, 10:00pm

    NOW until 10:00pm Fri

    Flood Watch

  • Overnight

    Low: 42 °F

    Showers

  • Friday

    Friday: Showers.  High near 52. South southeast wind 11 to 13 mph, with gusts as high as 22 mph.  Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 52 °F

    Showers

  • Friday Night

    Friday Night: Showers, mainly before 10pm.  Low around 38. North northeast wind 5 to 9 mph.  Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 38 °F

    Showers then
    Chance
    Showers

  • Saturday

    Saturday: A 20 percent chance of showers before 10am.  Mostly sunny, with a high near 50. Calm wind becoming north 5 to 7 mph in the afternoon.

    High: 50 °F

    Slight Chance
    Showers then
    Sunny

  • Saturday Night

    Saturday Night: Areas of frost after 1am.  Otherwise, mostly cloudy, with a low around 33. Northeast wind 3 to 6 mph.

    Low: 33 °F

    Partly Cloudy
    then Areas
    Frost

  • Sunday

    Sunday: Areas of frost before 10am.  Otherwise, mostly sunny, with a high near 52. Light and variable wind.

    High: 52 °F

    Areas Frost
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 37.

    Low: 37 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 56.

    High: 56 °F

    Sunny

Detailed Forecast

Overnight
Showers. Low around 42. South southeast wind around 11 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Showers. High near 52. South southeast wind 11 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
Showers, mainly before 10pm. Low around 38. North northeast wind 5 to 9 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
A 20 percent chance of showers before 10am. Mostly sunny, with a high near 50. Calm wind becoming north 5 to 7 mph in the afternoon.
Saturday Night
Areas of frost after 1am. Otherwise, mostly cloudy, with a low around 33. Northeast wind 3 to 6 mph.
Sunday
Areas of frost before 10am. Otherwise, mostly sunny, with a high near 52. Light and variable wind.
Sunday Night
Partly cloudy, with a low around 37.
Monday
Sunny, with a high near 56.
Monday Night
Partly cloudy, with a low around 40.
Tuesday
Mostly sunny, with a high near 58.
Tuesday Night
Patchy fog. Otherwise, partly cloudy, with a low around 41.
Wednesday
Partly sunny, with a high near 58.
Wednesday Night
A slight chance of rain. Patchy fog. Otherwise, mostly cloudy, with a low around 42.
New Year's Day
Rain likely. Mostly cloudy, with a high near 56.
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ABOUT THIS FORECAST

 
Point Forecast:
Arcata CA
 40.87°N 124.07°W (Elev. 194 ft)
1:10 pm PST Dec 25, 2025
1am PST Dec 26, 2025-6pm PST Jan 1, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database