Etna, CA Weather & Growing Conditions
This Afternoon
76°F
Sunny
Sunny, with a high near 76. North northwest wind around 7 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 76°F | Sunny | 7 mph NNW | 0% |
| Tonight | 57°F | Mostly Clear | 6 mph ESE | 0% |
| Sunday | 78°F | Mostly Sunny | 2 to 8 mph N | 0% |
| Sunday Night | 60°F | Mostly Clear | 7 mph SE | 0% |
| Monday | 80°F | Mostly Sunny | 3 to 8 mph NE | 0% |
| Monday Night | 58°F | Mostly Clear | 2 to 8 mph E | 0% |
| Tuesday | 77°F | Sunny | 1 to 10 mph NNW | 1% |
| Tuesday Night | 53°F | Mostly Clear | 2 to 10 mph NNE | 0% |
| Wednesday | 74°F | Sunny | 2 to 8 mph NE | 0% |
| Wednesday Night | 52°F | Mostly Clear | 3 to 8 mph ENE | 0% |
| Thursday | 76°F | Sunny | 3 to 8 mph SSE | 0% |
| Thursday Night | 53°F | Partly Cloudy | 5 to 8 mph S | 4% |
| Friday | 69°F | Mostly Sunny | 3 to 10 mph WSW | 6% |
| Friday Night | 50°F | Partly Cloudy | 6 to 10 mph S | 5% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Etna, CA
Last spring frost
May 20
First fall frost
Oct 5
Growing season
135 days
Hardiness zone
8a
Explore more for Etna, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Callahan, Ca (4.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.