Portola, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Portola, a city in Plumas County, California.
Today
52°F
Light Rain Likely
Rain likely. Mostly cloudy. High near 52, with temperatures falling to around 41 in the afternoon. Southwest wind 5 to 15 mph. Chance of precipitation is 60%.
7-day forecast for Portola
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 52°F | Light Rain Likely | 5 to 15 mph SW | 56% |
| Tonight | 28°F | Chance Light Rain then Mostly Cloudy | 0 to 5 mph W | 33% |
| Wednesday | 55°F | Mostly Sunny | 0 to 5 mph E | 0% |
| Wednesday Night | 29°F | Partly Cloudy | 0 mph | 0% |
| Thursday | 58°F | Sunny | 0 to 5 mph E | 0% |
| Thursday Night | 29°F | Mostly Clear | 0 to 5 mph E | 0% |
| Friday | 61°F | Sunny | 0 to 5 mph E | 0% |
| Friday Night | 32°F | Mostly Clear | 0 to 5 mph E | 0% |
| Saturday | 65°F | Sunny | 0 to 5 mph SE | 0% |
| Saturday Night | 33°F | Mostly Clear | 0 to 5 mph SW | 0% |
| Sunday | 64°F | Mostly Sunny | 0 to 5 mph SW | 0% |
| Sunday Night | 33°F | Partly Cloudy | 0 to 5 mph SW | 0% |
| Monday | 61°F | Mostly Sunny | 0 to 5 mph SW | 1% |
| Monday Night | 34°F | Partly Cloudy | 0 to 5 mph S | 1% |
Forecast source: National Weather Service (api.weather.gov) for Portola (39.821, -120.474). Updated through the day.
Growing snapshot for Portola
Last spring frost
Jun 11
First fall frost
Sep 10
Growing season
91 days
Hardiness zone
6b
More local growing data for Portola: nearby ZIP 96122 weather · frost dates · planting calendar · California frost dates
Nearby towns & communities
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Belden
Blairsden
Bucks Lake
C-Road
Canyondam
Caribou
Chester
Chilcoot-Vinton
Clear Creek
Clio
Crescent Mills
Cromberg
Delleker
East Quincy
East Shore
Gold Mountain
Graeagle
Greenhorn
Greenville
Hamilton Branch
Indian Falls
Iron Horse
Johnsville
Keddie
La Porte
Lake Almanor Country Club
Lake Almanor Peninsula
Lake Almanor West
Climate data from the nearest NOAA station, Portola, Ca (1.1 mi from Portola). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.