The Weather Network
Weather
Maps
News
Video
|
Welcome
Monthly
Forecasts
Current
Hourly
7 Days
14 Days
Monthly
°C
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Castro City, CA
Content continues below
Content continues below
Daily Historical Averages
January 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
15°
12
15°
13
17°
14
17°
15
19°
16
19°
17
17°
18
17°
19
17°
20
15°
21
13°
22
14°
23
13°
24
13°
25
13°
26
27
28
29
30
31
Forecast
Sunday, January 11, 2026
Day
15°
Feels 15
Wind
5 km/h S
Gust
8 km/h
Humidity
50%
P.O.P
20%
Night
7°
Feels 7
Wind
4 km/h NW
Gust
6 km/h
Humidity
66%
P.O.P
20%
Historical Averages
Jan 11
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.
January
Average Temperature
High
16°
Feels 15
Low
5°
Feels 3
Average Precipitation
7 Days
Rain amount
52mm
Snow amount
0cm