Alta, CA Weather & Growing Conditions
Overnight
34°F
Areas Of Frost
Areas of frost. Clear, with a low around 34. East wind around 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 34°F | Areas Of Frost | 6 mph E | 0% |
| Wednesday | 55°F | Areas Of Frost then Sunny | 1 to 8 mph NW | 1% |
| Wednesday Night | 40°F | Partly Cloudy | 3 to 8 mph NE | 1% |
| Thursday | 61°F | Sunny | 2 to 8 mph NNE | 0% |
| Thursday Night | 42°F | Mostly Clear | 2 to 12 mph NNE | 0% |
| Friday | 65°F | Sunny | 2 to 9 mph NNE | 0% |
| Friday Night | 47°F | Mostly Clear | 2 to 14 mph N | 0% |
| Saturday | 65°F | Sunny | 2 to 9 mph SSW | 0% |
| Saturday Night | 46°F | Mostly Clear | 2 to 8 mph SSE | 0% |
| Sunday | 63°F | Mostly Sunny | 2 to 6 mph S | 0% |
| Sunday Night | 47°F | Partly Cloudy | 2 to 8 mph ESE | 0% |
| Monday | 60°F | Mostly Sunny | 5 mph S | 1% |
| Monday Night | 45°F | Partly Cloudy | 3 mph ESE | 1% |
| Tuesday | 60°F | Sunny then Slight Chance Light Rain | 5 mph SSE | 15% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Alta, CA
Last spring frost
May 22
First fall frost
Oct 16
Growing season
147 days
Hardiness zone
8a
Explore more for Alta, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Lake Spaulding, Ca (2.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.