National Weather Service Forecast for: Portola CA
Issued by: National Weather Service Reno, NV
Updated: 3:30 pm PST Nov 1, 2026
 
Tonight

Tonight: Clear, with a low around 25. Calm wind.
Clear

 Monday

Monday: Increasing clouds, with a high near 59. East wind around 5 mph.
Increasing
Clouds
 Monday
Night
Monday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 27. Calm wind becoming east around 5 mph.
Decreasing
Clouds
 Tuesday

Tuesday: A 50 percent chance of rain, mainly between 10am and 4pm. Snow level 5100 feet rising to 6800 feet in the afternoon. Partly sunny, with a high near 54. Calm wind becoming southwest around 5 mph in the morning.
Chance Rain

 Tuesday
Night
Tuesday Night: A 20 percent chance of rain before 10pm. Snow level 6400 feet lowering to 5600 feet after midnight . Mostly cloudy, with a low around 26. Calm wind.
Slight Chance
Rain then
Partly Cloudy
 Wednesday

Wednesday: Mostly sunny, with a high near 57. Calm wind becoming east around 5 mph.
Mostly Sunny

 Wednesday
Night
Wednesday Night: Partly cloudy, with a low around 28.
Partly Cloudy

 Thursday

Thursday: Mostly sunny, with a high near 60.
Mostly Sunny

 Thursday
Night
Thursday Night: Partly cloudy, with a low around 30.
Partly Cloudy
Lo 25 °F Hi 59 °F Lo 27 °F Hi 54 °F Lo 26 °F Hi 57 °F Lo 28 °F Hi 60 °F Lo 30 °F

 

Tonight
 
 Clear, with a low around 25. Calm wind.
Monday
 
 Increasing clouds, with a high near 59. East wind around 5 mph.
Monday Night
 
 Mostly cloudy, then gradually becoming mostly clear, with a low around 27. Calm wind becoming east around 5 mph.
Tuesday
 
 A 50 percent chance of rain, mainly between 10am and 4pm. Snow level 5100 feet rising to 6800 feet in the afternoon. Partly sunny, with a high near 54. Calm wind becoming southwest around 5 mph in the morning.
Tuesday Night
 
 A 20 percent chance of rain before 10pm. Snow level 6400 feet lowering to 5600 feet after midnight . Mostly cloudy, with a low around 26. Calm wind.
Wednesday
 
 Mostly sunny, with a high near 57. Calm wind becoming east around 5 mph.
Wednesday Night
 
 Partly cloudy, with a low around 28.
Thursday
 
 Mostly sunny, with a high near 60.
Thursday Night
 
 Partly cloudy, with a low around 30.
Friday
 
 Mostly sunny, with a high near 62.
Friday Night
 
 Mostly clear, with a low around 30.
Saturday
 
 Sunny, with a high near 64.
Saturday Night
 
 Partly cloudy, with a low around 31.
Sunday
 
 Mostly sunny, with a high near 66.

 

Forecast from NOAA-NWS for Portola CA.