S
M
T
W
T
F
S
26
97°
75°
27
96°
75°
28
90°
76°
29
87°
70°
30
87°
69°
31
79°
69°
1
74°
69°
2
80°
68°
3
85°
64°
4
86°
65°
5
88°
64°
6
81°
68°
7
89°
68°
8
86°
71°
9
90°
69°
10
92°
74°
11
93°
74°
12
94°
71°
13
94°
74°
14
95°
76°
15
96°
75°
16
99°
74°
17
86°
68°
18
87°
65°
19
80°
69°
20
86°
69°
21
88°
65°
22
87°
65°
23
84°
64°
24
N/A
25
87°
67°
26
89°
67°
27
86°
64°
28
86°
60°
29
89°
66°
30
90°
70°
31
86°
66°
1
86°
64°
2
85°
64°
3
84°
63°
4
85°
65°
5
87°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Chester
Chester's August 2026 forecast shows daily high temperatures ranging from 84° to 90°, with overnight lows between 60° and 70°. The average high for August is 87° with an average low of 65°. 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.
