S
M
T
W
T
F
S
26
89°
67°
27
90°
70°
28
90°
70°
29
89°
69°
30
91°
69°
31
91°
68°
1
90°
71°
2
90°
65°
3
91°
61°
4
84°
61°
5
81°
60°
6
82°
62°
7
83°
63°
8
82°
62°
9
83°
61°
10
83°
63°
11
85°
68°
12
86°
69°
13
90°
69°
14
90°
67°
15
89°
63°
16
85°
66°
17
85°
59°
18
82°
60°
19
82°
63°
20
84°
68°
21
88°
67°
22
89°
68°
23
90°
67°
24
89°
65°
25
90°
64°
26
87°
60°
27
81°
59°
28
81°
66°
29
87°
64°
30
86°
65°
31
Hist. Avg.
83°
62°
1
Hist. Avg.
82°
62°
2
Hist. Avg.
82°
62°
3
Hist. Avg.
82°
62°
4
Hist. Avg.
82°
61°
5
Hist. Avg.
81°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Philadelphia
Philadelphia's August 2026 forecast shows daily high temperatures ranging from 81° to 91°, with overnight lows between 59° and 71°. The average high for August is 87° with an average low of 65°. 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.
