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

Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Current conditions at

Eureka WFO (EKA01)

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

Overcast

56°F

13°C

Humidity NA
Wind Speed N 0 MPH
Barometer NA
Dewpoint N/A
Visibility 7.00 mi
Last update NA
Extended Forecast for

Arcata CA

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 64. Northwest wind around 6 mph.

    High: 64 °F

    Mostly Cloudy

  • Tonight

    Tonight: Patchy fog after 11pm. Otherwise, cloudy, with a low around 50. West northwest wind around 5 mph becoming calm in the evening.

    Low: 50 °F

    Patchy Fog

  • Sunday

    Sunday: Areas of fog before 11am. Otherwise, cloudy, with a high near 64. Calm wind becoming west northwest around 6 mph in the afternoon.

    High: 64 °F

    Areas Fog
    then Mostly
    Cloudy

  • Sunday Night

    Sunday Night: Areas of fog after 11pm. Otherwise, mostly cloudy, with a low around 52. Northwest wind around 5 mph becoming calm in the evening.

    Low: 52 °F

    Areas Fog

  • Monday

    Monday: Areas of fog before 11am. Otherwise, mostly cloudy, with a high near 66. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 66 °F

    Areas Fog
    then Partly
    Sunny

  • Monday Night

    Monday Night: Patchy fog after 8pm. Otherwise, mostly cloudy, with a low around 52. Northwest wind around 5 mph becoming calm in the evening.

    Low: 52 °F

    Patchy Fog

  • Tuesday

    Tuesday: Areas of fog before 11am. Otherwise, partly sunny, with a high near 66.

    High: 66 °F

    Areas Fog
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Areas of fog after 2am. Otherwise, partly cloudy, with a low around 51.

    Low: 51 °F

    Partly Cloudy
    then Areas
    Fog

  • Wednesday

    Wednesday: Areas of fog before 11am. Otherwise, partly sunny, with a high near 66.

    High: 66 °F

    Areas Fog
    then Mostly
    Sunny

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 64. Northwest wind around 6 mph.
Tonight
Patchy fog after 11pm. Otherwise, cloudy, with a low around 50. West northwest wind around 5 mph becoming calm in the evening.
Sunday
Areas of fog before 11am. Otherwise, cloudy, with a high near 64. Calm wind becoming west northwest around 6 mph in the afternoon.
Sunday Night
Areas of fog after 11pm. Otherwise, mostly cloudy, with a low around 52. Northwest wind around 5 mph becoming calm in the evening.
Monday
Areas of fog before 11am. Otherwise, mostly cloudy, with a high near 66. Calm wind becoming northwest around 5 mph in the afternoon.
Monday Night
Patchy fog after 8pm. Otherwise, mostly cloudy, with a low around 52. Northwest wind around 5 mph becoming calm in the evening.
Tuesday
Areas of fog before 11am. Otherwise, partly sunny, with a high near 66.
Tuesday Night
Areas of fog after 2am. Otherwise, partly cloudy, with a low around 51.
Wednesday
Areas of fog before 11am. Otherwise, partly sunny, with a high near 66.
Wednesday Night
Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 51.
Thursday
Patchy fog. Otherwise, partly sunny, with a high near 66.
Thursday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 52.
Friday
Partly sunny, with a high near 65.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Arcata CA
 40.87°N 124.07°W (Elev. 194 ft)
Last Update:
10:05 am PDT Sep 19, 2026
Forecast Valid:
12pm PDT Sep 19, 2026-6pm PDT Sep 25, 2026
 
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Additional Resources

Radar & Satellite Image

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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