National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Heavy Rainfall to Bring Flooding Threat to California; Heavy Snow in the Sierra

A strong atmospheric river will bring heavy rainfall to California through the holiday week. The heaviest rainfall is expected on Wednesday in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall is expected in the Sierra Nevada from the atmospheric river, raising concerns for major snow‐load impacts. Travel may be difficult to impossible over the passes. Read More >

Hazardous Weather Conditions

Current conditions at

Arcata / Eureka, Arcata Airport (KACV)

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

Rain

55°F

13°C

Humidity 89%
Wind Speed ESE 5 MPH
Barometer 29.25 in (990.52 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 24 Dec 12:53 AM PST
Extended Forecast for

Arcata/Eureka Airport CA

Flood Watch December 24, 01:01am until December 26, 10:00pm
High Wind Watch December 25, 12:00am until December 25, 07:00pm
High Wind Warning until December 24, 09:00am
Click here for hazard details and duration
Flood Watch
High Wind Watch
High Wind Warning
  •  
    Flood Watch December 24, 01:01am until December 26, 10:00pm
    High Wind Warning until December 24, 09:00am

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Overnight

    Low: 45 °F

    Rain and
    Windy

  • Wednesday

    Wednesday: Rain, mainly before 10am. High near 58. Windy, with a south southwest wind 18 to 28 mph decreasing to 7 to 17 mph in the afternoon. Winds could gust as high as 38 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 58 °F

    Rain and
    Windy then
    Chance Rain

  • Wednesday Night

    Wednesday Night: Rain before 4am, then showers and possibly a thunderstorm after 4am. Low around 45. Southeast wind 7 to 13 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    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 54. Windy, with a south wind 23 to 25 mph, with gusts as high as 36 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 54 °F

    Showers and
    Windy

  • Thursday Night

    Thursday Night: Rain. Low around 43. South southeast wind 13 to 15 mph, with gusts as high as 25 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 10 to 13 mph becoming north northeast in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 90%. 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. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 37 °F

    Rain Likely
    then Chance
    Rain

  • Saturday

    Saturday: Mostly sunny, with a high near 50.

    High: 50 °F

    Mostly Sunny

Detailed Forecast

Overnight
Rain. Low around 45. Windy, with a southeast wind around 25 mph, with gusts as high as 37 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday
Rain, mainly before 10am. High near 58. Windy, with a south southwest wind 18 to 28 mph decreasing to 7 to 17 mph in the afternoon. Winds could gust as high as 38 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Rain before 4am, then showers and possibly a thunderstorm after 4am. Low around 45. Southeast wind 7 to 13 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. Windy, with a south wind 23 to 25 mph, with gusts as high as 36 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 13 to 15 mph, with gusts as high as 25 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 10 to 13 mph becoming north northeast in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 90%. 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. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Mostly sunny, with a high near 50.
Saturday Night
Mostly clear, with a low around 35.
Sunday
Mostly sunny, with a high near 53.
Sunday Night
Partly cloudy, with a low around 36.
Monday
Sunny, with a high near 55.
Monday Night
Mostly clear, with a low around 39.
Tuesday
Mostly sunny, with a high near 56.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Arcata/Eureka Airport CA
 40.97°N 124.1°W (Elev. 197 ft)
Last Update:
1:10 pm PST Dec 23, 2025
Forecast Valid:
1am PST Dec 24, 2025-6pm PST Dec 30, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation