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The Fire Weather Zones in Del Norte, Humboldt, Trinity, Mendocino, and Lake Counties will be Changing in April 2026
The Public Forecast Zones in Trinity and Lake Counties will be Changing in April 2026

Hazardous Weather Conditions

Dense Fog Advisory in effect from March 18, 05:19 AM PDT until March 18, 08:00 AM PDT

Current conditions at

Eureka WFO (EKA01)

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

Fog

46°F

8°C

Humidity	NA
Wind Speed	N 0 MPH
Barometer	NA
Dewpoint	N/A
Visibility	0.50 mi
Last update	NA

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Eureka CA

Dense Fog Advisory until March 18, 08:00am

Click here for hazard details and duration

...

Dense Fog Advisory until March 18, 08:00am
NOW until 8:00am Wed
Dense Fog Advisory
Today
High: 62 °F
Decreasing
Clouds
Tonight
Low: 48 °F
Patchy Dense
Fog
Thursday
High: 67 °F
Mostly Sunny
Thursday Night
Low: 48 °F
Partly Cloudy
Friday
High: 63 °F
Partly Sunny
Friday Night
Low: 49 °F
Cloudy
Saturday
High: 57 °F
Mostly Cloudy
Saturday Night
Low: 43 °F
Mostly Cloudy
and Breezy
then Mostly
Cloudy

Detailed Forecast

Today

Mostly cloudy, then gradually becoming sunny, with a high near 62. Calm wind becoming north northwest around 6 mph in the afternoon.

Tonight

Patchy dense fog between 11pm and 2am. Otherwise, partly cloudy, with a low around 48. North northwest wind around 5 mph becoming calm in the evening.

Thursday

Mostly sunny, with a high near 67. Calm wind becoming north northwest around 5 mph in the afternoon.

Thursday Night

Partly cloudy, with a low around 48. North northwest wind around 5 mph becoming calm in the evening.

Friday

Partly sunny, with a high near 63. Calm wind becoming north northwest 5 to 8 mph in the afternoon.

Friday Night

Cloudy, with a low around 49. North wind 7 to 9 mph.

Saturday

Mostly cloudy, with a high near 57.

Saturday Night

Mostly cloudy, with a low around 43. Breezy.