S
M
T
W
T
F
S
26
84°
66°
27
83°
66°
28
84°
65°
29
82°
66°
30
83°
63°
31
83°
60°
1
82°
61°
2
81°
65°
3
83°
66°
4
83°
65°
5
84°
63°
6
85°
66°
7
85°
66°
8
82°
65°
9
83°
61°
10
86°
63°
11
84°
65°
12
84°
65°
13
86°
64°
14
85°
65°
15
86°
64°
16
88°
64°
17
88°
63°
18
86°
61°
19
86°
58°
20
81°
58°
21
81°
57°
22
82°
57°
23
82°
58°
24
83°
57°
25
82°
57°
26
82°
58°
27
83°
57°
28
86°
57°
29
82°
58°
30
82°
57°
31
86°
58°
1
85°
61°
2
86°
60°
3
82°
56°
4
81°
55°
5
84°
56°
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 81° to 88°, with overnight lows between 55° and 66°. The average high for August is 84° with an average low of 61°. 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.
