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7 Days
14 Days
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Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Radnor, PA
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May
Average Temperature
High
22°
Feels 22
Low
12°
Feels 11
Average Precipitation
12 Days
Rain amount
79.3mm
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
16
17
18
19
20
34°
21
18°
22
17°
23
12°
24
16°
25
19°
26
23°
27
25°
28
25°
29
24°
30
24°
31
24°
Forecast
Wednesday, May 20, 2026
Day
34°
Feels 35
Wind
21 km/h W
Gust
32 km/h
Humidity
36%
P.O.P
60%
Rain
2-4 mm
Night
15°
Feels 13
Wind
19 km/h N
Gust
29 km/h
Humidity
88%
P.O.P
70%
Rain
~10 mm
Historical Averages
May 20
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.