The Weather Network
Weather
Maps
News
Video
|
Welcome
Monthly
⋮
Current
Hourly
7 Days
14 Days
Weekend
Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Clayton, CA
Content continues below
Content continues below
May
Average Temperature
High
24°
Feels 24
Low
10°
Feels 8
Average Precipitation
3 Days
Rain amount
9.3mm
Snow amount
0cm
Daily Historical Averages
May 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
31°
20
31°
21
30°
22
25°
23
23°
24
22°
25
24°
26
24°
27
26°
28
24°
29
25°
30
25°
31
26°
Forecast
Tuesday, May 19, 2026
Day
31°
Feels 31
Wind
16 km/h W
Gust
25 km/h
Humidity
9%
P.O.P
0%
Night
15°
Feels 15
Wind
20 km/h SW
Gust
30 km/h
Humidity
61%
P.O.P
20%
Historical Averages
May 19
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.