S
M
T
W
T
F
S
26
85°
71°
27
89°
68°
28
88°
66°
29
88°
69°
30
90°
70°
31
86°
66°
1
86°
71°
2
91°
71°
3
90°
69°
4
91°
66°
5
85°
67°
6
85°
68°
7
86°
68°
8
86°
66°
9
87°
65°
10
87°
69°
11
88°
70°
12
89°
70°
13
87°
69°
14
88°
70°
15
90°
70°
16
90°
65°
17
89°
65°
18
85°
64°
19
84°
69°
20
87°
64°
21
87°
64°
22
85°
65°
23
86°
68°
24
89°
66°
25
88°
65°
26
88°
66°
27
87°
62°
28
83°
61°
29
82°
62°
30
83°
62°
31
84°
65°
1
87°
67°
2
87°
66°
3
86°
66°
4
87°
65°
5
87°
66°
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 82° to 91°, with overnight lows between 61° and 71°. The average high for August is 87° 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 Chester. See also: September | October | November.
