S
M
T
W
T
F
S
26
86°
66°
27
84°
66°
28
86°
69°
29
88°
65°
30
83°
67°
31
83°
68°
1
84°
66°
2
84°
69°
3
87°
70°
4
88°
69°
5
89°
66°
6
83°
63°
7
85°
69°
8
90°
68°
9
83°
69°
10
89°
69°
11
85°
66°
12
87°
68°
13
88°
68°
14
88°
66°
15
83°
62°
16
81°
62°
17
82°
67°
18
81°
68°
19
82°
68°
20
85°
67°
21
85°
68°
22
86°
67°
23
86°
67°
24
90°
66°
25
89°
67°
26
89°
65°
27
82°
64°
28
84°
65°
29
81°
59°
30
82°
58°
31
80°
58°
1
79°
64°
2
79°
65°
3
86°
64°
4
87°
65°
5
86°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Phoenixville
Phoenixville's August 2026 forecast shows daily high temperatures ranging from 79° to 90°, with overnight lows between 58° and 70°. The average high for August is 85° with an average low of 66°. 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 Phoenixville. See also: September | October | November.