Calpine, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Calpine, a community in Sierra County, California.
This Afternoon
73°F
Sunny
Sunny, with a high near 73. Northeast wind 0 to 5 mph.
7-day forecast for Calpine
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 73°F | Sunny | 0 to 5 mph NE | 0% |
| Tonight | 38°F | Clear | 0 to 5 mph SW | 0% |
| Saturday | 78°F | Sunny | 0 to 5 mph E | 0% |
| Saturday Night | 42°F | Partly Cloudy | 0 to 5 mph E | 0% |
| Sunday | 80°F | Partly Sunny | 0 to 5 mph E | 0% |
| Sunday Night | 46°F | Mostly Cloudy | 0 to 5 mph NW | 0% |
| Monday | 81°F | Partly Sunny | 0 to 5 mph NE | 2% |
| Monday Night | 45°F | Partly Cloudy | 0 mph | 1% |
| Tuesday | 82°F | Sunny | 0 to 5 mph NE | 0% |
| Tuesday Night | 46°F | Mostly Clear | 0 to 5 mph S | 0% |
| Wednesday | 84°F | Sunny | 0 to 5 mph SE | 0% |
| Wednesday Night | 46°F | Mostly Clear | 0 to 5 mph S | 0% |
| Thursday | 83°F | Mostly Sunny | 0 to 10 mph S | 1% |
| Thursday Night | 46°F | Partly Cloudy | 0 to 10 mph SW | 0% |
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 Sep 18, 2026.