National Weather Service Forecast for: Arcata CA
Issued by: National Weather Service Eureka, CA
Updated: 2:10 pm PDT Apr 6, 2026
 
Tonight

Tonight: Patchy drizzle.  Patchy fog after 2am.  Otherwise, cloudy, with a low around 47. Calm wind.
Patchy
Drizzle and
Patchy Fog

Tuesday

Tuesday: Patchy drizzle before 11am.  Patchy fog before 8am.  Otherwise, mostly cloudy, with a high near 58. Calm wind becoming west northwest around 6 mph in the afternoon.
Patchy
Drizzle and
Patchy Fog
then Partly
Sunny
Tuesday
Night
Tuesday Night: Patchy drizzle after 2am.  Mostly cloudy, with a low around 47. Light north wind.
Mostly Cloudy
then Patchy
Drizzle

Wednesday

Wednesday: A slight chance of drizzle before 11am, then a chance of showers after 11am.  Partly sunny, with a high near 62. Light and variable wind.  Chance of precipitation is 40%.
Chance
Showers

Wednesday
Night
Wednesday Night: A 50 percent chance of showers.  Patchy fog after 2am.  Otherwise, mostly cloudy, with a low around 50. Calm wind.  New precipitation amounts of less than a tenth of an inch possible.
Chance
Showers and
Patchy Fog

Thursday

Thursday: Showers likely, with thunderstorms also possible after 11am.  Areas of fog before 11am.  Otherwise, mostly cloudy, with a high near 59. Light west northwest wind.  Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Showers
Likely and
Areas Fog

Thursday
Night
Thursday Night: Rain likely.  Patchy fog after 8pm.  Otherwise, mostly cloudy, with a low around 50. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Rain Likely
and Patchy
Fog

Friday

Friday: Rain likely.  Patchy fog before 11am.  Otherwise, mostly cloudy, with a high near 59.
Rain Likely
and Patchy
Fog

Friday
Night
Friday Night: A chance of rain.  Mostly cloudy, with a low around 48.
Chance Rain


Lo 47 °F Hi 58 °F Lo 47 °F Hi 62 °F Lo 50 °F Hi 59 °F Lo 50 °F Hi 59 °F Lo 48 °F

 

Tonight
 
Patchy drizzle. Patchy fog after 2am. Otherwise, cloudy, with a low around 47. Calm wind.
Tuesday
 
Patchy drizzle before 11am. Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 58. Calm wind becoming west northwest around 6 mph in the afternoon.
Tuesday Night
 
Patchy drizzle after 2am. Mostly cloudy, with a low around 47. Light north wind.
Wednesday
 
A slight chance of drizzle before 11am, then a chance of showers after 11am. Partly sunny, with a high near 62. Light and variable wind. Chance of precipitation is 40%.
Wednesday Night
 
A 50 percent chance of showers. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 50. Calm wind. New precipitation amounts of less than a tenth of an inch possible.
Thursday
 
Showers likely, with thunderstorms also possible after 11am. Areas of fog before 11am. Otherwise, mostly cloudy, with a high near 59. Light west northwest wind. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
 
Rain likely. Patchy fog after 8pm. Otherwise, mostly cloudy, with a low around 50. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday
 
Rain likely. Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 59.
Friday Night
 
A chance of rain. Mostly cloudy, with a low around 48.
Saturday
 
A chance of rain. Mostly cloudy, with a high near 54.
Saturday Night
 
A chance of rain. Mostly cloudy, with a low around 44.
Sunday
 
A chance of rain. Partly sunny, with a high near 55.
Sunday Night
 
A chance of rain. Mostly cloudy, with a low around 44.
Monday
 
A slight chance of rain. Partly sunny, with a high near 57.

 

Forecast from NOAA-NWS for Arcata CA.