Monthly Historical AveragesCastro City, CA
Average Temperature
High
21°
Feels 21
Low
8°
Feels 7
Average Precipitation
4 Days
26.5mm
0cm
Content continues below
Daily Historical Averages
S
M
T
W
T
F
S
ForecastSunday, April 5, 2026
Day
27°Feels 27
Wind
22 km/h NW
Gust
33 km/h
Humidity
28%
P.O.P
20%
Night
12°Feels 12
Wind
14 km/h NW
Gust
21 km/h
Humidity
82%
P.O.P
30%
Historical AveragesApr 5
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity