Calpine, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Calpine, a community in Sierra County, California.
Today
94°F
Haze then Sunny
Haze and patchy smoke between 9am and noon. Sunny, with a high near 94. Northwest wind 0 to 10 mph.
7-day forecast for Calpine
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 94°F | Haze then Sunny | 0 to 10 mph NW | 0% |
| Tonight | 53°F | Mostly Clear | 0 to 10 mph SW | 0% |
| Wednesday | 93°F | Sunny | 0 to 10 mph SW | 0% |
| Wednesday Night | 51°F | Clear | 0 to 10 mph SW | 0% |
| Thursday | 94°F | Sunny | 0 to 10 mph SW | 0% |
| Thursday Night | 55°F | Clear | 0 to 10 mph SW | 0% |
| Friday | 95°F | Sunny | 0 to 10 mph SW | 0% |
| Friday Night | 55°F | Mostly Clear | 0 to 10 mph SW | 0% |
| Saturday | 94°F | Sunny | 0 to 10 mph SW | 0% |
| Saturday Night | 54°F | Clear | 0 to 10 mph S | 0% |
| Sunday | 92°F | Sunny | 0 to 10 mph SW | 0% |
| Sunday Night | 50°F | Clear | 5 to 10 mph SW | 0% |
| Monday | 87°F | Sunny | 5 to 15 mph SW | 1% |
| Monday Night | 47°F | Mostly Clear | 0 to 15 mph SW | 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 Aug 4, 2026.