Alta, CA Weather & Growing Conditions
Tonight
37°F
Partly Cloudy then Areas Of Frost
Areas of frost between 4am and 5am. Partly cloudy, with a low around 37. East northeast wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 37°F | Partly Cloudy then Areas Of Frost | 2 mph ENE | 9% |
| Wednesday | 56°F | Areas Of Frost then Sunny | 0 to 3 mph N | 0% |
| Wednesday Night | 41°F | Partly Cloudy | 3 mph NE | 0% |
| Thursday | 61°F | Sunny | 0 to 3 mph N | 0% |
| Thursday Night | 44°F | Mostly Clear | 1 to 6 mph N | 0% |
| Friday | 65°F | Sunny | 0 to 3 mph NNE | 0% |
| Friday Night | 50°F | Mostly Clear | 0 to 8 mph NE | 0% |
| Saturday | 66°F | Sunny | 0 to 5 mph S | 0% |
| Saturday Night | 51°F | Mostly Clear | 0 to 5 mph NE | 0% |
| Sunday | 65°F | Mostly Sunny | 0 to 3 mph S | 0% |
| Sunday Night | 51°F | Partly Cloudy | 2 mph NE | 0% |
| Monday | 61°F | Partly Sunny | 0 to 3 mph ESE | 3% |
| Monday Night | 49°F | Partly Cloudy | 2 mph ENE | 3% |
| Tuesday | 62°F | Mostly Sunny | 0 to 3 mph S | 10% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Alta, CA
Last spring frost
May 4
First fall frost
Nov 4
Growing season
183 days
Hardiness zone
8b
Explore more for Alta, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Blue Canyon Ap, Ca (4.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.