S
M
T
W
T
F
S
26
92°
72°
27
94°
69°
28
95°
73°
29
95°
74°
30
94°
73°
31
93°
72°
1
94°
72°
2
93°
71°
3
94°
68°
4
90°
67°
5
90°
66°
6
89°
69°
7
90°
68°
8
91°
69°
9
88°
68°
10
90°
69°
11
93°
70°
12
93°
70°
13
90°
72°
14
94°
72°
15
Hist. Avg.
93°
72°
16
Hist. Avg.
93°
72°
17
Hist. Avg.
93°
71°
18
Hist. Avg.
93°
71°
19
Hist. Avg.
93°
71°
20
Hist. Avg.
93°
71°
21
Hist. Avg.
93°
71°
22
Hist. Avg.
93°
71°
23
Hist. Avg.
93°
71°
24
Hist. Avg.
93°
71°
25
Hist. Avg.
92°
70°
26
Hist. Avg.
92°
70°
27
Hist. Avg.
92°
70°
28
Hist. Avg.
92°
70°
29
Hist. Avg.
92°
70°
30
Hist. Avg.
92°
70°
31
Hist. Avg.
92°
70°
1
Hist. Avg.
92°
69°
2
Hist. Avg.
92°
69°
3
Hist. Avg.
91°
69°
4
Hist. Avg.
91°
69°
5
Hist. Avg.
91°
69°
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 88° to 95°, with overnight lows between 66° and 74°. The average high for August is 92° with an average low of 70°. 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.