Castroville, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Castroville, a community in Monterey County, California.
This Afternoon
64°F
Slight Chance Light Rain
A slight chance of rain before 5pm. Mostly sunny. High near 64, with temperatures falling to around 60 in the afternoon. Southwest wind 8 to 12 mph, with gusts as high as 23 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Castroville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 64°F | Slight Chance Light Rain | 8 to 12 mph SW | 21% |
| Tonight | 49°F | Chance Light Rain | 7 mph SE | 29% |
| Wednesday | 67°F | Sunny | 3 to 9 mph NNE | 1% |
| Wednesday Night | 48°F | Mostly Cloudy | 6 to 9 mph NNE | 0% |
| Thursday | 68°F | Mostly Sunny | 2 to 7 mph N | 0% |
| Thursday Night | 48°F | Mostly Clear | 5 to 8 mph NNE | 0% |
| Friday | 71°F | Sunny | 2 to 7 mph N | 0% |
| Friday Night | 50°F | Mostly Clear | 6 to 10 mph ENE | 0% |
| Saturday | 75°F | Sunny | 3 to 9 mph NNE | 0% |
| Saturday Night | 51°F | Mostly Clear | 5 to 8 mph ESE | 0% |
| Sunday | 73°F | Mostly Sunny | 2 to 7 mph N | 0% |
| Sunday Night | 52°F | Mostly Cloudy | 3 to 8 mph NE | 0% |
| Monday | 71°F | Partly Sunny | 1 to 7 mph N | 0% |
| Monday Night | 51°F | Mostly Cloudy | 5 to 8 mph NNW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Castroville (36.765, -121.753). Updated through the day.
Growing snapshot for Castroville
Last spring frost
Feb 4
First fall frost
Dec 6
Growing season
311 days
Hardiness zone
9b
More local growing data for Castroville: nearby ZIP 95012 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, Salinas #2, Ca (9.7 mi from Castroville). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.