S
M
T
W
T
F
S
26
89°
65°
27
89°
64°
28
90°
64°
29
91°
65°
30
94°
67°
31
94°
68°
1
93°
68°
2
90°
69°
3
92°
69°
4
96°
68°
5
92°
64°
6
93°
63°
7
89°
64°
8
88°
64°
9
88°
65°
10
90°
64°
11
91°
65°
12
90°
64°
13
91°
69°
14
94°
66°
15
90°
64°
16
93°
67°
17
94°
63°
18
88°
62°
19
88°
67°
20
90°
68°
21
94°
67°
22
93°
68°
23
94°
68°
24
94°
69°
25
93°
68°
26
94°
68°
27
93°
69°
28
92°
68°
29
92°
67°
30
91°
68°
31
90°
65°
1
89°
64°
2
89°
64°
3
88°
63°
4
90°
65°
5
90°
65°
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 88° to 96°, with overnight lows between 62° and 69°. The average high for August is 91° 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 Chester. See also: September | October | November.
