National Weather Service Forecast for: Portola CA
Issued by: National Weather Service Reno, NV
Updated: 11:30 pm PDT Jun 21, 2026
 
Overnight

Overnight: Clear, with a low around 44. Calm wind.
Clear
 Monday

Monday: Sunny, with a high near 88. Light and variable wind becoming west 5 to 10 mph in the afternoon.
Sunny
 Monday
Night
Monday Night: Mostly clear, with a low around 47. West wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 20 mph.
Mostly Clear
 Tuesday

Tuesday: Sunny, with a high near 87. Light and variable wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Sunny
 Tuesday
Night
Tuesday Night: Clear, with a low around 48. West wind 10 to 15 mph becoming light southwest in the evening.
Clear
 Wednesday

Wednesday: Sunny, with a high near 87. Light south wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Sunny
 Wednesday
Night
Wednesday Night: Clear, with a low around 47.
Clear
 Thursday

Thursday: Sunny, with a high near 84.
Sunny
 Thursday
Night
Thursday Night: Mostly clear, with a low around 46.
Mostly Clear
Lo 44 °F Hi 88 °F Lo 47 °F Hi 87 °F Lo 48 °F Hi 87 °F Lo 47 °F Hi 84 °F Lo 46 °F

 

Overnight
 
 Clear, with a low around 44. Calm wind.
Monday
 
 Sunny, with a high near 88. Light and variable wind becoming west 5 to 10 mph in the afternoon.
Monday Night
 
 Mostly clear, with a low around 47. West wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 20 mph.
Tuesday
 
 Sunny, with a high near 87. Light and variable wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night
 
 Clear, with a low around 48. West wind 10 to 15 mph becoming light southwest in the evening.
Wednesday
 
 Sunny, with a high near 87. Light south wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Wednesday Night
 
 Clear, with a low around 47.
Thursday
 
 Sunny, with a high near 84.
Thursday Night
 
 Mostly clear, with a low around 46.
Friday
 
 Mostly sunny, with a high near 76.
Friday Night
 
 Mostly clear, with a low around 45. Breezy.
Saturday
 
 Sunny, with a high near 73.
Saturday Night
 
 Clear, with a low around 40.
Sunday
 
 Sunny, with a high near 76.

 

Forecast from NOAA-NWS for Portola CA.