S
M
T
W
T
F
S
26
66°
61°
27
69°
58°
28
76°
64°
29
75°
62°
30
68°
57°
31
67°
50°
1
67°
54°
2
72°
53°
3
81°
61°
4
76°
64°
5
67°
57°
6
64°
55°
7
69°
51°
8
76°
51°
9
74°
56°
10
68°
55°
11
80°
52°
12
89°
64°
13
90°
61°
14
72°
58°
15
68°
54°
16
68°
51°
17
71°
61°
18
71°
57°
19
68°
53°
20
67°
52°
21
68°
54°
22
66°
52°
23
67°
52°
24
68°
53°
25
67°
50°
26
66°
50°
27
65°
49°
28
65°
50°
29
68°
52°
30
66°
50°
31
66°
54°
1
67°
52°
2
64°
49°
3
64°
49°
4
67°
55°
5
69°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Chester
Chester's August 2026 forecast shows daily high temperatures ranging from 64° to 90°, with overnight lows between 49° and 64°. The average high for August is 69° with an average low of 53°. 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 Chester. See also: September | October | November.
