Etna, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Etna, a city in Siskiyou County, California.
Overnight
61°F
Clear
Clear, with a low around 61. East southeast wind 2 to 6 mph.
7-day forecast for Etna
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 61°F | Clear | 2 to 6 mph ESE | 0% |
| Tuesday | 101°F | Sunny | 2 to 8 mph ENE | 0% |
| Tuesday Night | 65°F | Clear then Patchy Smoke | 2 to 8 mph W | 0% |
| Wednesday | 104°F | Sunny | 1 to 6 mph NE | 1% |
| Wednesday Night | 65°F | Clear | 6 mph SW | 1% |
| Thursday | 102°F | Sunny | 2 to 7 mph SSW | 0% |
| Thursday Night | 66°F | Clear | 2 to 7 mph SW | 0% |
| Friday | 101°F | Sunny | 2 to 9 mph NE | 0% |
| Friday Night | 64°F | Clear | 1 to 9 mph NNE | 0% |
| Saturday | 98°F | Sunny | 1 to 12 mph NNE | 2% |
| Saturday Night | 61°F | Clear | 1 to 12 mph NNE | 2% |
| Sunday | 95°F | Sunny | 1 to 12 mph NNE | 1% |
| Sunday Night | 59°F | Clear | 2 to 12 mph NNE | 1% |
| Monday | 93°F | Sunny | 2 to 10 mph NNE | 3% |
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
Hornbrook
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 Aug 4, 2026.