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.

Overcast

51°F

11°C

Humidity NA
Wind Speed S 2 MPH
Barometer NA
Dewpoint N/A
Visibility 7.00 mi
Last update NA
Extended Forecast for

Arcata CA

Flood Watch December 24, 07:02pm until December 26, 10:00pm
Wind Advisory December 24, 10:00pm until December 25, 02:00pm
Flood Advisory December 24, 07:02pm until December 24, 07:45pm
Click here for hazard details and duration
Flood Watch
Wind Advisory
...
  •  
    Flood Watch December 24, 07:02pm until December 26, 10:00pm
    Flood Advisory December 24, 07:02pm until December 24, 07:45pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Tonight

    Low: 45 °F

    Showers

  • 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 100%. 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 43. South southeast wind 11 to 15 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 43 °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 half and three quarters 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 20 percent chance of rain before 10am. Sunny, with a high near 50. Calm wind becoming north around 6 mph in the afternoon.

    High: 50 °F

    Slight Chance
    Rain then
    Sunny

  • 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

Tonight
Rain, mainly before 4am, then showers and possibly a thunderstorm after 4am. Low around 45. Southeast wind 8 to 14 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
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 100%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
Rain. Low around 43. South southeast wind 11 to 15 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. 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 half and three quarters 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 20 percent chance of rain before 10am. Sunny, with a high near 50. Calm wind becoming north around 6 mph in the afternoon.
Saturday Night
Mostly cloudy, with a low around 34.
Sunday
Partly sunny, with a high near 53.
Sunday Night
Mostly clear, with a low around 36.
Monday
Mostly sunny, with a high near 57.
Monday Night
Partly cloudy, with a low around 40.
Tuesday
Sunny, with a high near 58.
Tuesday Night
Partly cloudy, 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:
1:28 pm PST Dec 24, 2025
Forecast Valid:
7pm PST Dec 24, 2025-6pm PST Dec 31, 2025
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation