Castella, CA Weather & Growing Conditions
Today
95°F
Sunny
Sunny. High near 95, with temperatures falling to around 93 in the afternoon. East southeast wind 2 to 7 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 95°F | Sunny | 2 to 7 mph ESE | 0% |
| Tonight | 65°F | Mostly Clear | 5 mph ENE | 0% |
| Wednesday | 92°F | Sunny | 2 to 7 mph SE | 0% |
| Wednesday Night | 64°F | Clear | 1 to 6 mph W | 0% |
| Thursday | 92°F | Sunny | 2 to 6 mph NNE | 0% |
| Thursday Night | 64°F | Clear | 1 to 6 mph NW | 0% |
| Friday | 93°F | Sunny | 2 to 6 mph E | 0% |
| Friday Night | 64°F | Clear | 2 to 6 mph W | 0% |
| Saturday | 93°F | Sunny | 1 to 6 mph ENE | 0% |
| Saturday Night | 63°F | Clear | 5 to 8 mph NW | 0% |
| Sunday | 90°F | Sunny | 1 to 8 mph NE | 0% |
| Sunday Night | 61°F | Mostly Clear | 7 mph WSW | 0% |
| Monday | 86°F | Sunny | 2 to 7 mph ENE | 0% |
| Monday Night | 60°F | Clear | 2 to 7 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
8b
Explore more for Castella, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Dunsmuir Trtmt Pl, Ca (5.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.