Average data for 10 years
1 May
Wednesday
+19°
+14°
2 May
Thursday
+18°
+14°
3 May
Friday
+17°
+13°
4 May
Saturday
+18°
+12°
5 May
Sunday
+18°
+14°
6 May
Monday
+18°
+13°
7 May
Tuesday
+19°
+13°
8 May
Wednesday
+19°
+14°
9 May
Thursday
+20°
+14°
10 May
Friday
+18°
+13°
11 May
Saturday
+19°
+13°
12 May
Sunday
+17°
+13°
13 May
Monday
+19°
+12°
14 May
Tuesday
+22°
+15°
15 May
Wednesday
+21°
+16°
16 May
Thursday
+20°
+16°
17 May
Friday
+19°
+15°
18 May
Saturday
+20°
+14°
19 May
Sunday
+20°
+15°
20 May
Monday
+21°
+15°
21 May
Tuesday
+20°
+15°
22 May
Wednesday
+20°
+16°
23 May
Thursday
+22°
+16°
24 May
Friday
+23°
+16°
25 May
Saturday
+25°
+17°
26 May
Sunday
+26°
+18°
27 May
Monday
+24°
+19°
28 May
Tuesday
+23°
+17°
29 May
Wednesday
+26°
+18°
30 May
Thursday
+26°
+19°
31 May
Friday
+25°
+19°
May in Philadelphia is the rainiest month of the year. In May, the weather in Philadelphia is typically warm. Average daily high temperature in May is about 21 degrees above zero. On average, Philadelphia has 17 rainy, 7 sunny, 4 partly cloudy, and 3 cloudy days in May. The rains are usually heavy. May as well as January, February, March, and December is considered the most uncomfortable time to visit Philadelphia.