S
M
T
W
T
F
S
26
85°
65°
27
88°
70°
28
85°
69°
29
86°
70°
30
82°
72°
31
89°
72°
1
90°
73°
2
91°
76°
3
89°
73°
4
90°
70°
5
85°
75°
6
90°
77°
7
88°
75°
8
89°
72°
9
91°
73°
10
93°
77°
11
88°
73°
12
85°
70°
13
86°
71°
14
86°
69°
15
82°
69°
16
85°
66°
17
84°
68°
18
84°
69°
19
89°
73°
20
90°
71°
21
89°
67°
22
88°
71°
23
90°
73°
24
91°
74°
25
90°
73°
26
88°
72°
27
83°
72°
28
84°
71°
29
87°
72°
30
88°
71°
31
88°
71°
1
87°
68°
2
81°
64°
3
80°
64°
4
80°
63°
5
81°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Philadelphia
Philadelphia's August 2026 forecast shows daily high temperatures ranging from 80° to 93°, with overnight lows between 63° and 77°. The average high for August is 87° with an average low of 71°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Philadelphia. See also: September | October | November.
