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°
73°
6
93°
78°
7
94°
76°
8
91°
74°
9
93°
75°
10
91°
75°
11
88°
73°
12
90°
76°
13
90°
75°
14
90°
77°
15
90°
71°
16
80°
68°
17
89°
70°
18
88°
76°
19
90°
73°
20
85°
68°
21
82°
69°
22
76°
69°
23
85°
66°
24
82°
65°
25
82°
66°
26
82°
70°
27
81°
68°
28
84°
68°
29
82°
66°
30
80°
65°
31
80°
66°
1
81°
63°
2
78°
63°
3
79°
75°
4
81°
64°
5
78°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Philadelphia International Airport
Philadelphia International Airport's August 2026 forecast shows daily high temperatures ranging from 76° to 85°, with overnight lows between 61° and 75°. The average high for August is 81° with an average low of 67°. 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 International Airport. See also: September | October | November.
