Calpine, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Calpine, a community in Sierra County, California.
Today
54°F
Light Rain Likely
Rain likely. Partly sunny. High near 54, with temperatures falling to around 41 in the afternoon. Southwest wind 5 to 10 mph. Chance of precipitation is 60%.
7-day forecast for Calpine
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 54°F | Light Rain Likely | 5 to 10 mph SW | 60% |
| Tonight | 23°F | Chance Light Rain then Mostly Cloudy | 0 to 5 mph SW | 33% |
| Wednesday | 57°F | Mostly Sunny | 0 mph | 0% |
| Wednesday Night | 25°F | Partly Cloudy | 0 mph | 0% |
| Thursday | 60°F | Sunny | 0 mph | 0% |
| Thursday Night | 27°F | Mostly Clear | 0 mph | 0% |
| Friday | 64°F | Sunny | 0 mph | 0% |
| Friday Night | 30°F | Mostly Clear | 0 to 5 mph E | 0% |
| Saturday | 68°F | Sunny | 0 mph | 0% |
| Saturday Night | 31°F | Mostly Clear | 0 to 5 mph W | 0% |
| Sunday | 66°F | Mostly Sunny | 0 to 5 mph SW | 0% |
| Sunday Night | 32°F | Partly Cloudy | 0 to 5 mph S | 0% |
| Monday | 63°F | Partly Sunny | 0 to 5 mph SW | 1% |
| Monday Night | 31°F | Partly Cloudy | 0 to 5 mph S | 1% |
Forecast source: National Weather Service (api.weather.gov) for Calpine (39.663, -120.439). Updated through the day.
Growing snapshot for Calpine
Last spring frost
Jun 11
First fall frost
Sep 10
Growing season
91 days
Hardiness zone
6b
More local growing data for Calpine: nearby ZIP 96124 weather · frost dates · planting calendar · California frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Portola, Ca (11.5 mi from Calpine). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.