National Weather Service Forecast for: Petrolia CA
Issued by: National Weather Service Eureka, CA
Updated: 2:10 pm PDT Apr 6, 2026
 
This
Afternoon
This Afternoon: Mostly sunny, with a high near 66. West wind around 6 mph.
Mostly Sunny

 Tonight

Tonight: Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 46. West wind around 5 mph becoming calm in the evening.
Mostly Cloudy
then Patchy
Fog
 Tuesday

Tuesday: Mostly sunny, with a high near 64. Calm wind becoming west around 6 mph in the afternoon.
Mostly Sunny

 Tuesday
Night
Tuesday Night: Mostly cloudy, with a low around 47. Calm wind.
Mostly Cloudy

 Wednesday

Wednesday: A chance of drizzle before 11am, then a chance of showers after 11am. Partly sunny, with a high near 67. Calm wind. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Chance
Showers
 Wednesday
Night
Wednesday Night: A 50 percent chance of showers. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 51. Calm wind. New precipitation amounts of less than a tenth of an inch possible.
Chance
Showers and
Patchy Fog
 Thursday

Thursday: Showers likely. Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 65. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Showers
Likely and
Patchy Fog
 Thursday
Night
Thursday Night: Rain likely. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 49.
Rain Likely
and Patchy
Fog
 Friday

Friday: A chance of rain. Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 64.
Chance Rain
and Patchy
Fog
Hi 66 °F Lo 46 °F Hi 64 °F Lo 47 °F Hi 67 °F Lo 51 °F Hi 65 °F Lo 49 °F Hi 64 °F

 

This Afternoon
 
 Mostly sunny, with a high near 66. West wind around 6 mph.
Tonight
 
 Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 46. West wind around 5 mph becoming calm in the evening.
Tuesday
 
 Mostly sunny, with a high near 64. Calm wind becoming west around 6 mph in the afternoon.
Tuesday Night
 
 Mostly cloudy, with a low around 47. Calm wind.
Wednesday
 
 A chance of drizzle before 11am, then a chance of showers after 11am. Partly sunny, with a high near 67. Calm wind. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
 
 A 50 percent chance of showers. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 51. Calm wind. New precipitation amounts of less than a tenth of an inch possible.
Thursday
 
 Showers likely. Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 65. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
 
 Rain likely. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 49.
Friday
 
 A chance of rain. Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 64.
Friday Night
 
 A chance of rain. Mostly cloudy, with a low around 48.
Saturday
 
 A chance of rain. Partly sunny, with a high near 59.
Saturday Night
 
 A chance of rain. Mostly cloudy, with a low around 44.
Sunday
 
 A chance of rain. Partly sunny, with a high near 60.

 

Forecast from NOAA-NWS for Petrolia CA.