Etna, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Etna, a city in Siskiyou County, California.
Overnight
32°F
Clear
Clear, with a low around 32. West wind around 1 mph.
7-day forecast for Etna
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 32°F | Clear | 1 mph W | 0% |
| Wednesday | 57°F | Mostly Sunny | 0 to 5 mph NE | 3% |
| Wednesday Night | 33°F | Partly Cloudy | 3 mph WNW | 1% |
| Thursday | 58°F | Sunny | 1 to 5 mph E | 0% |
| Thursday Night | 36°F | Mostly Clear | 1 to 5 mph S | 0% |
| Friday | 66°F | Mostly Sunny | 2 mph E | 0% |
| Friday Night | 39°F | Mostly Clear | 1 to 5 mph SSE | 0% |
| Saturday | 71°F | Sunny | 3 mph S | 0% |
| Saturday Night | 37°F | Partly Cloudy | 3 to 16 mph SSW | 3% |
| Sunday | 63°F | Mostly Sunny | 1 to 6 mph WNW | 3% |
| Sunday Night | 37°F | Mostly Cloudy | 1 to 10 mph SE | 0% |
| Monday | 63°F | Partly Sunny | 1 to 5 mph SW | 5% |
| Monday Night | 36°F | Partly Cloudy | 2 to 14 mph SSW | 9% |
| Tuesday | 63°F | Slight Chance Light Rain | 5 mph SSE | 21% |
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
Carrick
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Dunsmuir
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Happy Camp
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Lake Shastina
Macdoel
McCloud
Montague
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.