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7 Days
14 Days
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Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Castaic, CA
Content continues below
May
Average Temperature
High
26°
Feels 26
Low
11°
Feels 11
Average Precipitation
0 Days
Rain amount
0.7mm
Snow amount
0cm
Content continues below
Daily Historical Averages
May 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
35°
12
29°
13
26°
14
28°
15
29°
16
30°
17
28°
18
28°
19
26°
20
25°
21
25°
22
26°
23
29°
24
27°
25
24°
26
27
28
29
30
31
Forecast
Monday, May 11, 2026
Day
35°
Feels 35
Wind
22 km/h S
Gust
33 km/h
Humidity
12%
P.O.P
0%
Night
18°
Feels 18
Wind
15 km/h SW
Gust
22 km/h
Humidity
40%
P.O.P
0%
Historical Averages
May 11
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.