Portola, CA Weather & Growing Conditions
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
| 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). Updated through the day.
Growing snapshot for Portola, CA
Last spring frost
Jun 11
First fall frost
Sep 10
Growing season
91 days
Hardiness zone
6b
Explore more for Portola, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Portola, Ca (1.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.