Alta, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Alta, a community in Placer County, California.
Today
94°F
Sunny
Sunny. High near 94, with temperatures falling to around 92 in the afternoon. South wind 2 to 6 mph.
7-day forecast for Alta
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 94°F | Sunny | 2 to 6 mph S | 0% |
| Tonight | 69°F | Clear | 3 mph E | 0% |
| Wednesday | 93°F | Sunny | 5 mph SE | 0% |
| Wednesday Night | 69°F | Clear | 3 mph SSE | 0% |
| Thursday | 93°F | Sunny | 5 mph SSE | 0% |
| Thursday Night | 70°F | Clear | 1 to 5 mph SSE | 0% |
| Friday | 94°F | Sunny | 5 mph SSE | 0% |
| Friday Night | 71°F | Clear | 1 to 5 mph SSE | 0% |
| Saturday | 94°F | Sunny | 2 to 6 mph SSW | 0% |
| Saturday Night | 71°F | Mostly Clear | 5 mph S | 0% |
| Sunday | 92°F | Sunny | 2 to 6 mph SSE | 0% |
| Sunday Night | 69°F | Clear | 5 mph S | 0% |
| Monday | 88°F | Sunny | 2 to 7 mph SSE | 0% |
| Monday Night | 66°F | Mostly Clear | 2 to 6 mph S | 1% |
Forecast source: National Weather Service (api.weather.gov) for Alta (39.216, -120.799). Updated through the day.
Growing snapshot for Alta
Last spring frost
May 4
First fall frost
Nov 4
Growing season
183 days
Hardiness zone
8b
More local growing data for Alta: nearby ZIP 95701 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, Blue Canyon Ap, Ca (4.6 mi from Alta). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.