Etna, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Etna, a city in Siskiyou County, California.
Tonight
32°F
Mostly Clear
Mostly clear, with a low around 32. Southwest wind 0 to 5 mph.
7-day forecast for Etna
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 32°F | Mostly Clear | 0 to 5 mph SW | 1% |
| Wednesday | 57°F | Mostly Sunny | 3 mph NE | 8% |
| Wednesday Night | 33°F | Slight Chance Light Rain then Partly Cloudy | 3 mph SW | 16% |
| Thursday | 58°F | Sunny | 2 mph ENE | 0% |
| Thursday Night | 37°F | Partly Cloudy | 1 to 7 mph SSE | 0% |
| Friday | 66°F | Mostly Sunny | 2 mph E | 0% |
| Friday Night | 38°F | Mostly Clear | 1 to 5 mph SE | 0% |
| Saturday | 71°F | Sunny | 3 mph S | 1% |
| Saturday Night | 39°F | Partly Cloudy | 3 to 16 mph SSW | 5% |
| Sunday | 63°F | Partly Sunny | 1 to 7 mph WSW | 5% |
| Sunday Night | 37°F | Mostly Cloudy | 1 to 12 mph SSW | 4% |
| Monday | 62°F | Partly Sunny | 5 mph SSW | 7% |
| Monday Night | 38°F | Partly Cloudy | 2 to 13 mph SSW | 14% |
| Tuesday | 63°F | Slight Chance Light Rain | 5 mph SSE | 24% |
Forecast source: National Weather Service (api.weather.gov) for Etna (41.458, -122.896). Updated through the day.
Growing snapshot for Etna
Last spring frost
May 20
First fall frost
Oct 5
Growing season
135 days
Hardiness zone
8a
More local growing data for Etna: nearby ZIP 96037 weather · frost dates · planting calendar · California frost dates
Nearby towns & communities
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Happy Camp
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Lake Shastina
Macdoel
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Mount Hebron
Mount Shasta
Tennant
Weed
Yreka
Climate data from the nearest NOAA station, Callahan, Ca (15.2 mi from Etna). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.