National Weather Service Forecast for: Petrolia CA
Issued by: National Weather Service Eureka, CA
Updated: 2:10 am PDT May 26, 2026
 
This
Afternoon
This Afternoon: A chance of showers and thunderstorms before 2pm, then a chance of rain after 2pm. Mostly cloudy, with a high near 58. Northwest wind around 10 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Chance
Showers

 Tonight

Tonight: A 20 percent chance of rain before 11pm. Mostly cloudy, with a low around 48. North wind around 7 mph, with gusts as high as 23 mph.
Slight Chance
Rain then
Mostly Cloudy

 Wednesday

Wednesday: Mostly cloudy, with a high near 61. North wind 7 to 10 mph, with gusts as high as 25 mph.
Mostly Cloudy


 Wednesday
Night
Wednesday Night: A 30 percent chance of rain, mainly after 11pm. Mostly cloudy, with a low around 49. North wind 5 to 8 mph becoming calm in the evening. Winds could gust as high as 25 mph.
Chance Rain


 Thursday

Thursday: A 20 percent chance of rain before 11am. Patchy fog before 11am. Otherwise, mostly sunny, with a high near 66. Light and variable wind.
Slight Chance
Rain and
Patchy Fog
then Mostly
Sunny
 Thursday
Night
Thursday Night: A 20 percent chance of rain. Mostly cloudy, with a low around 49. Light north wind.
Slight Chance
Rain

 Friday

Friday: Partly sunny, with a high near 63.
Partly Sunny


 Friday
Night
Friday Night: Partly cloudy, with a low around 47.
Partly Cloudy


 Saturday

Saturday: Mostly sunny, with a high near 62.
Mostly Sunny
Hi 58 °F Lo 48 °F Hi 61 °F Lo 49 °F Hi 66 °F Lo 49 °F Hi 63 °F Lo 47 °F Hi 62 °F

 

This Afternoon
 
 A chance of showers and thunderstorms before 2pm, then a chance of rain after 2pm. Mostly cloudy, with a high near 58. Northwest wind around 10 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
 
 A 20 percent chance of rain before 11pm. Mostly cloudy, with a low around 48. North wind around 7 mph, with gusts as high as 23 mph.
Wednesday
 
 Mostly cloudy, with a high near 61. North wind 7 to 10 mph, with gusts as high as 25 mph.
Wednesday Night
 
 A 30 percent chance of rain, mainly after 11pm. Mostly cloudy, with a low around 49. North wind 5 to 8 mph becoming calm in the evening. Winds could gust as high as 25 mph.
Thursday
 
 A 20 percent chance of rain before 11am. Patchy fog before 11am. Otherwise, mostly sunny, with a high near 66. Light and variable wind.
Thursday Night
 
 A 20 percent chance of rain. Mostly cloudy, with a low around 49. Light north wind.
Friday
 
 Partly sunny, with a high near 63.
Friday Night
 
 Partly cloudy, with a low around 47.
Saturday
 
 Mostly sunny, with a high near 62.
Saturday Night
 
 Mostly clear, with a low around 45.
Sunday
 
 Sunny, with a high near 65.
Sunday Night
 
 Mostly clear, with a low around 46.
Monday
 
 Sunny, with a high near 72.

 

Forecast from NOAA-NWS for Petrolia CA.