S
M
T
W
T
F
S
26
61°
44°
27
71°
47°
28
69°
49°
29
64°
51°
30
62°
43°
1
62°
45°
2
58°
43°
3
60°
48°
4
67°
53°
5
72°
55°
6
70°
53°
7
69°
52°
8
66°
51°
9
65°
53°
10
66°
54°
11
69°
54°
12
70°
58°
13
71°
54°
14
69°
52°
15
68°
52°
16
66°
53°
17
67°
51°
18
69°
52°
19
75°
59°
20
74°
55°
21
71°
53°
22
72°
54°
23
71°
53°
24
72°
57°
25
80°
63°
26
79°
55°
27
72°
55°
28
72°
56°
29
74°
59°
30
81°
64°
31
83°
64°
1
82°
63°
2
83°
66°
3
85°
67°
4
85°
65°
5
84°
59°
6
77°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Philadelphia
Philadelphia's May 2026 forecast shows daily high temperatures ranging from 58° to 85°, with overnight lows between 43° and 67°. The average high for May is 72° with an average low of 55°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Philadelphia. See also: June | July | August.
