S
M
T
W
T
F
S
26
85°
72°
27
86°
69°
28
85°
68°
29
85°
71°
30
86°
74°
31
89°
73°
1
88°
68°
2
85°
68°
3
84°
69°
4
84°
67°
5
85°
67°
6
84°
66°
7
84°
67°
8
85°
68°
9
84°
71°
10
84°
73°
11
85°
73°
12
85°
70°
13
87°
72°
14
89°
66°
15
88°
66°
16
83°
70°
17
85°
71°
18
88°
67°
19
83°
66°
20
82°
65°
21
83°
70°
22
83°
66°
23
82°
71°
24
82°
71°
25
85°
70°
26
83°
72°
27
86°
72°
28
87°
71°
29
87°
71°
30
86°
65°
31
81°
65°
1
80°
66°
2
80°
65°
3
81°
69°
4
80°
64°
5
84°
64°
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 80° to 89°, with overnight lows between 64° and 74°. The average high for August is 84° with an average low of 69°. 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.
