Alta Sierra, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Alta Sierra, a community in Kern County, California.
Overnight
64°F
Clear
Clear. Low around 64, with temperatures rising to around 66 overnight. West northwest wind around 10 mph, with gusts as high as 20 mph.
7-day forecast for Alta Sierra
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 64°F | Clear | 10 mph WNW | 0% |
| Tuesday | 85°F | Sunny | 5 to 15 mph WNW | 0% |
| Tuesday Night | 65°F | Clear | 5 to 15 mph WNW | 0% |
| Wednesday | 85°F | Sunny | 5 to 15 mph WNW | 0% |
| Wednesday Night | 66°F | Clear | 5 to 15 mph NNW | 0% |
| Thursday | 85°F | Sunny | 5 to 15 mph WNW | 0% |
| Thursday Night | 66°F | Clear | 5 to 15 mph NNW | 0% |
| Friday | 85°F | Sunny | 5 to 15 mph WNW | 0% |
| Friday Night | 67°F | Clear | 10 to 15 mph NNW | 0% |
| Saturday | 86°F | Sunny | 5 to 15 mph WNW | 1% |
| Saturday Night | 67°F | Clear | 10 to 15 mph NW | 0% |
| Sunday | 85°F | Sunny | 5 to 20 mph WNW | 1% |
| Sunday Night | 66°F | Mostly Clear | 5 to 20 mph NW | 0% |
| Monday | 82°F | Sunny | 5 to 20 mph WNW | 3% |
Forecast source: National Weather Service (api.weather.gov) for Alta Sierra (35.726, -118.545). Updated through the day.
Growing snapshot for Alta Sierra
Last spring frost
Apr 7
First fall frost
Nov 11
Growing season
217 days
Hardiness zone
8b
More local growing data for Alta Sierra: nearby ZIP 93285 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, Kern River Ph 3, Ca (3.9 mi from Alta Sierra). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.