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 >

Hazardous Weather Conditions

Current conditions at

Eureka WFO (EKA01)

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

Rain

51°F

11°C

Humidity NA
Wind Speed SSE 11 MPH
Barometer NA
Dewpoint N/A
Visibility 6.00 mi
Last update NA
Extended Forecast for

Arcata CA

Flood Watch December 25, 04:30am until December 26, 10:00pm
Wind Advisory until December 25, 02:00pm
Click here for hazard details and duration
Flood Watch
Wind Advisory
  •  
    Flood Watch December 25, 04:30am until December 26, 10:00pm
    Wind Advisory until December 25, 02:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Overnight

    Low: 45 °F

    Showers and
    Breezy

  • Christmas Day

    Christmas Day: Showers and possibly a thunderstorm before 10am, then rain between 10am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 53. Windy, with a south wind 21 to 29 mph, with gusts as high as 46 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 53 °F

    Showers and
    Windy

  • Thursday Night

    Thursday Night: Rain. Low around 42. South southeast wind 11 to 15 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 42 °F

    Rain

  • Friday

    Friday: Rain. High near 52. Southeast wind 13 to 15 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 52 °F

    Rain

  • Friday Night

    Friday Night: Rain likely, mainly before 10pm. Mostly cloudy, with a low around 37. North northeast wind 5 to 9 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 37 °F

    Rain Likely
    then Chance
    Rain

  • Saturday

    Saturday: A slight chance of rain before 10am, then a slight chance of showers after 10am. Mostly sunny, with a high near 50. Calm wind becoming north 5 to 7 mph in the afternoon. Chance of precipitation is 20%.

    High: 50 °F

    Slight Chance
    Rain

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 34.

    Low: 34 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 53.

    High: 53 °F

    Partly Sunny

Detailed Forecast

Overnight
Showers and possibly a thunderstorm. Low around 45. Breezy, with a south southeast wind around 18 mph, with gusts as high as 39 mph. Chance of precipitation is 100%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Christmas Day
Showers and possibly a thunderstorm before 10am, then rain between 10am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 53. Windy, with a south wind 21 to 29 mph, with gusts as high as 46 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
Rain. Low around 42. South southeast wind 11 to 15 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Friday
Rain. High near 52. Southeast wind 13 to 15 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
Rain likely, mainly before 10pm. Mostly cloudy, with a low around 37. North northeast wind 5 to 9 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
A slight chance of rain before 10am, then a slight chance of showers after 10am. Mostly sunny, with a high near 50. Calm wind becoming north 5 to 7 mph in the afternoon. Chance of precipitation is 20%.
Saturday Night
Mostly cloudy, with a low around 34.
Sunday
Partly sunny, with a high near 53.
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
Sunny, with a high near 58.
Tuesday Night
Patchy fog. Otherwise, mostly clear, with a low around 41.
Wednesday
Mostly sunny, with a high near 59.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Arcata CA
 40.87°N 124.07°W (Elev. 194 ft)
Last Update:
1:10 am PST Dec 25, 2025
Forecast Valid:
4am PST Dec 25, 2025-6pm PST Dec 31, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation