National Weather Service Forecast for: Boonville CA
Issued by: National Weather Service Eureka, CA
Updated: 2:46 pm PDT Aug 19, 2026
 
Overnight

Overnight: Patchy fog after 5am. Otherwise, mostly clear, with a low around 53. Calm wind.
Patchy Fog

 Thursday

Thursday: Patchy fog before 8am. Otherwise, increasing clouds, with a high near 87. Calm wind becoming northwest around 6 mph in the afternoon.
Patchy Fog
then Partly
Sunny
 Thursday
Night
Thursday Night: Patchy fog after 5am. Otherwise, cloudy, with a low around 52. Northwest wind 5 to 7 mph becoming calm in the evening.
Cloudy then
Patchy Fog
 Friday

Friday: Patchy fog before 8am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 83. Calm wind becoming west northwest around 6 mph in the afternoon.
Patchy Fog
then Mostly
Sunny
 Friday
Night
Friday Night: Patchy fog after 5am. Otherwise, partly cloudy, with a low around 49. West northwest wind 5 to 8 mph becoming calm after midnight. Winds could gust as high as 18 mph.
Mostly Clear
then Patchy
Fog
 Saturday

Saturday: Patchy fog before 8am. Otherwise, sunny, with a high near 83. Calm wind becoming west northwest 5 to 8 mph in the afternoon.
Patchy Fog
then Sunny
 Saturday
Night
Saturday Night: Patchy fog after 5am. Otherwise, mostly clear, with a low around 51.
Mostly Clear
then Patchy
Fog
 Sunday

Sunday: Patchy fog before 8am. Otherwise, sunny, with a high near 89.
Patchy Fog
then Sunny
 Sunday
Night
Sunday Night: Patchy fog after 5am. Otherwise, partly cloudy, with a low around 52.
Mostly Clear
then Patchy
Fog
Lo 53 °F Hi 87 °F Lo 52 °F Hi 83 °F Lo 49 °F Hi 83 °F Lo 51 °F Hi 89 °F Lo 52 °F

 

Overnight
 
 Patchy fog after 5am. Otherwise, mostly clear, with a low around 53. Calm wind.
Thursday
 
 Patchy fog before 8am. Otherwise, increasing clouds, with a high near 87. Calm wind becoming northwest around 6 mph in the afternoon.
Thursday Night
 
 Patchy fog after 5am. Otherwise, cloudy, with a low around 52. Northwest wind 5 to 7 mph becoming calm in the evening.
Friday
 
 Patchy fog before 8am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 83. Calm wind becoming west northwest around 6 mph in the afternoon.
Friday Night
 
 Patchy fog after 5am. Otherwise, partly cloudy, with a low around 49. West northwest wind 5 to 8 mph becoming calm after midnight. Winds could gust as high as 18 mph.
Saturday
 
 Patchy fog before 8am. Otherwise, sunny, with a high near 83. Calm wind becoming west northwest 5 to 8 mph in the afternoon.
Saturday Night
 
 Patchy fog after 5am. Otherwise, mostly clear, with a low around 51.
Sunday
 
 Patchy fog before 8am. Otherwise, sunny, with a high near 89.
Sunday Night
 
 Patchy fog after 5am. Otherwise, partly cloudy, with a low around 52.
Monday
 
 Patchy fog before 8am. Otherwise, mostly sunny, with a high near 87.
Monday Night
 
 Patchy fog. Otherwise, partly cloudy, with a low around 51.
Tuesday
 
 Areas of fog. Otherwise, partly sunny, with a high near 86.
Tuesday Night
 
 Patchy fog. Otherwise, partly cloudy, with a low around 51.
Wednesday
 
 Patchy fog. Otherwise, mostly sunny, with a high near 86.

 

Forecast from NOAA-NWS for Boonville CA.