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Current
Hourly
7 Days
14 Days
Weekend
Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Clayton, MO
Content continues below
May
Average Temperature
High
25°
Feels 25
Low
14°
Feels 14
Average Precipitation
15 Days
Rain amount
131.9mm
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
12
13
14
15
30°
16
24°
17
30°
18
30°
19
25°
20
19°
21
19°
22
24°
23
27°
24
28°
25
24°
26
23°
27
26°
28
25°
29
27°
30
31
Forecast
Friday, May 15, 2026
Day
30°
Feels 30
Wind
20 km/h S
Gust
30 km/h
Humidity
37%
P.O.P
80%
Rain
~10 mm
Night
20°
Feels 20
Wind
18 km/h S
Gust
26 km/h
Humidity
87%
P.O.P
40%
Rain
<1 mm
Historical Averages
May 15
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.