Castella, CA Weather & Growing Conditions
Today
97°F
Sunny
Sunny, with a high near 97. East northeast wind 3 to 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 97°F | Sunny | 3 to 8 mph ENE | 0% |
| Tonight | 69°F | Mostly Clear | 1 to 7 mph WSW | 0% |
| Wednesday | 95°F | Sunny | 1 to 12 mph SSE | 0% |
| Wednesday Night | 68°F | Clear | 0 to 9 mph SSW | 0% |
| Thursday | 94°F | Sunny | 0 to 6 mph S | 0% |
| Thursday Night | 68°F | Clear | 0 to 6 mph W | 0% |
| Friday | 96°F | Sunny | 0 to 6 mph SSE | 0% |
| Friday Night | 68°F | Clear | 1 to 6 mph NW | 0% |
| Saturday | 96°F | Sunny | 1 to 6 mph S | 0% |
| Saturday Night | 67°F | Clear | 6 mph NW | 0% |
| Sunday | 92°F | Sunny | 0 to 5 mph NNW | 0% |
| Sunday Night | 64°F | Mostly Clear | 2 to 6 mph NW | 0% |
| Monday | 89°F | Sunny | 1 to 6 mph E | 0% |
| Monday Night | 62°F | Clear | 0 to 6 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Castella, CA
Last spring frost
Apr 23
First fall frost
Oct 27
Growing season
185 days
Hardiness zone
8a
Explore more for Castella, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Dunsmuir Trtmt Pl, Ca (2.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.