Princeton, CA Weather & Growing Conditions
Today
68°F
Sunny
Sunny. High near 68, with temperatures falling to around 64 in the afternoon. Northwest wind 2 to 10 mph, with gusts as high as 20 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 68°F | Sunny | 2 to 10 mph NW | 2% |
| Tonight | 45°F | Patchy Fog | 1 to 5 mph NNW | 2% |
| Thursday | 73°F | Sunny | 5 to 10 mph NNW | 0% |
| Thursday Night | 42°F | Mostly Clear | 2 to 6 mph NNW | 0% |
| Friday | 72°F | Sunny | 3 mph NNW | 0% |
| Friday Night | 43°F | Mostly Clear | 1 mph N | 0% |
| Saturday | 72°F | Sunny | 2 mph NW | 0% |
| Saturday Night | 43°F | Mostly Clear | 2 mph N | 0% |
| Sunday | 72°F | Mostly Sunny | 0 to 3 mph NW | 0% |
| Sunday Night | 45°F | Partly Cloudy | 1 mph N | 0% |
| Monday | 70°F | Mostly Sunny | 2 mph W | 1% |
| Monday Night | 45°F | Partly Cloudy | 2 mph N | 1% |
| Tuesday | 71°F | Sunny | 3 mph NW | 7% |
| Tuesday Night | 46°F | Mostly Clear | 2 mph SSE | 10% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Princeton, CA
Last spring frost
Jan 29
First fall frost
Dec 7
Growing season
317 days
Hardiness zone
9b
Explore more for Princeton, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Oroville Muni Ap, Ca (17.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.