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

Strong Storm System Brings Heavy Mountain Snow to the Sierra Nevada and Critical Fire Weather Conditions to the Plains

A Pacific storm system will continue to bring low elevation rain and mountain snow to much of the West through Wednesday, with heavy mountain snow expected in the higher elevations of the Sierra Nevada. This system will also bring strong winds to the Intermountain West, Rockies, and Plains, which will create Critical fire weather conditions for the High Plains. Read More >

Current conditions at

Arcata / Eureka, Arcata Airport (KACV)

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

Mostly Cloudy

48°F

9°C

Humidity 93%
Wind Speed ESE 5 MPH
Barometer 29.99 in (1015.58 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 21 Apr 09:35 PM PDT
Extended Forecast for

Arcata/Eureka Airport CA

  • Tonight

    Tonight: Showers likely and possibly a thunderstorm before 11pm, then scattered showers. Mostly cloudy, with a low around 46. Light southeast wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 46 °F

    Showers
    Likely

  • Wednesday

    Wednesday: Scattered showers. Partly sunny, with a high near 56. Calm wind becoming west 5 to 8 mph in the afternoon. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    High: 56 °F

    Scattered
    Showers

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 41. West northwest wind 5 to 8 mph becoming calm in the evening.

    Low: 41 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 56. Light and variable wind becoming north northwest 9 to 14 mph in the morning. Winds could gust as high as 22 mph.

    High: 56 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 42. North northwest wind 9 to 14 mph becoming light northeast after midnight. Winds could gust as high as 22 mph.

    Low: 42 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 57. Light and variable wind becoming northwest 5 to 10 mph in the afternoon.

    High: 57 °F

    Sunny

  • Friday Night

    Friday Night: Areas of fog after 2am. Otherwise, partly cloudy, with a low around 44.

    Low: 44 °F

    Mostly Clear
    then Areas
    Fog

  • Saturday

    Saturday: A slight chance of rain. Areas of fog before 11am. Otherwise, mostly sunny, with a high near 58.

    High: 58 °F

    Slight Chance
    Rain and
    Areas Fog

  • Saturday Night

    Saturday Night: A slight chance of rain. Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 45.

    Low: 45 °F

    Slight Chance
    Rain and
    Patchy Fog

Detailed Forecast

Tonight
Showers likely and possibly a thunderstorm before 11pm, then scattered showers. Mostly cloudy, with a low around 46. Light southeast wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
Scattered showers. Partly sunny, with a high near 56. Calm wind becoming west 5 to 8 mph in the afternoon. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Partly cloudy, with a low around 41. West northwest wind 5 to 8 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 56. Light and variable wind becoming north northwest 9 to 14 mph in the morning. Winds could gust as high as 22 mph.
Thursday Night
Mostly clear, with a low around 42. North northwest wind 9 to 14 mph becoming light northeast after midnight. Winds could gust as high as 22 mph.
Friday
Sunny, with a high near 57. Light and variable wind becoming northwest 5 to 10 mph in the afternoon.
Friday Night
Areas of fog after 2am. Otherwise, partly cloudy, with a low around 44.
Saturday
A slight chance of rain. Areas of fog before 11am. Otherwise, mostly sunny, with a high near 58.
Saturday Night
A slight chance of rain. Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 45.
Sunday
A slight chance of rain. Areas of fog before 11am. Otherwise, mostly sunny, with a high near 57.
Sunday Night
A slight chance of rain. Partly cloudy, with a low around 44.
Monday
A chance of rain. Patchy fog. Otherwise, partly sunny, with a high near 58.
Monday Night
A slight chance of rain. Patchy fog. Otherwise, partly cloudy, with a low around 43.
Tuesday
A slight chance of rain. Patchy fog. Otherwise, mostly sunny, with a high near 59.
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ABOUT THIS FORECAST

 
Point Forecast:
Arcata/Eureka Airport CA
 40.97°N 124.1°W (Elev. 197 ft)
Last Update:
2:10 pm PDT Apr 21, 2026
Forecast Valid:
9pm PDT Apr 21, 2026-6pm PDT Apr 28, 2026
 
Forecast Discussion
 
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Additional Resources

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Link to Local Radar Data Link to Satellite Data

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