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

Arcata / Eureka, Arcata Airport (KACV)

Lat: 40.97806°NLon: 124.10861°WElev: 217.0ft.

Clear

55°F

13°C

Humidity 71%
Wind Speed WNW 3 MPH
Barometer 29.54 in (1000.34 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 24 Dec 02:20 PM PST
Extended Forecast for

Arcata/Eureka Airport CA

Flood Watch December 24, 02:38pm until December 26, 10:00pm
Wind Advisory December 24, 10:00pm until December 25, 02:00pm
Flood Advisory December 24, 02:38pm until December 24, 07:45pm
Click here for hazard details and duration
Flood Watch
Wind Advisory
Flood Advisory
  •  
    Flood Watch December 24, 02:38pm until December 26, 10:00pm
    Flood Advisory December 24, 02:38pm until December 24, 07:45pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • This Afternoon

    High: 56 °F

    Chance Rain

  • Tonight

    Tonight: Rain, mainly before 4am, then showers and possibly a thunderstorm after 4am. Low around 46. Breezy, with a southeast wind 9 to 16 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.

    Low: 46 °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 54. Very windy, with a south wind 23 to 32 mph, with gusts as high as 47 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 54 °F

    Showers and
    Very Windy

  • Thursday Night

    Thursday Night: Rain. Low around 43. Breezy, with a south southeast wind 15 to 17 mph, with gusts as high as 34 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 43 °F

    Rain and
    Breezy

  • Friday

    Friday: Rain. High near 53. Breezy, with a southeast wind around 17 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

    High: 53 °F

    Rain and
    Breezy

  • Friday Night

    Friday Night: Rain, mainly before 10pm. Low around 38. North wind 8 to 11 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 38 °F

    Rain then
    Chance Rain

  • Saturday

    Saturday: A 20 percent chance of rain before 10am. Sunny, with a high near 51.

    High: 51 °F

    Slight Chance
    Rain then
    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 35.

    Low: 35 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
A 40 percent chance of rain before 4pm. Partly sunny, with a high near 56. South wind around 7 mph.
Tonight
Rain, mainly before 4am, then showers and possibly a thunderstorm after 4am. Low around 46. Breezy, with a southeast wind 9 to 16 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 54. Very windy, with a south wind 23 to 32 mph, with gusts as high as 47 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
Rain. Low around 43. Breezy, with a south southeast wind 15 to 17 mph, with gusts as high as 34 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Friday
Rain. High near 53. Breezy, with a southeast wind around 17 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.
Friday Night
Rain, mainly before 10pm. Low around 38. North wind 8 to 11 mph. Chance of precipitation is 80%. 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 51.
Saturday Night
Partly cloudy, with a low around 35.
Sunday
Partly sunny, with a high near 52.
Sunday Night
Mostly clear, with a low around 36.
Monday
Sunny, with a high near 55.
Monday Night
Partly cloudy, with a low around 40.
Tuesday
Sunny, with a high near 57.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Arcata/Eureka Airport CA
 40.97°N 124.1°W (Elev. 197 ft)
Last Update:
1:28 pm PST Dec 24, 2025
Forecast Valid:
2pm PST Dec 24, 2025-6pm PST Dec 30, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation