S
M
T
W
T
F
S
26
88°
53°
27
90°
63°
28
81°
63°
29
84°
64°
30
83°
65°
31
88°
61°
1
89°
62°
2
88°
70°
3
87°
62°
4
85°
57°
5
86°
62°
6
91°
73°
7
92°
69°
8
88°
69°
9
91°
66°
10
86°
67°
11
85°
66°
12
83°
64°
13
85°
65°
14
84°
56°
15
75°
58°
16
74°
61°
17
76°
59°
18
77°
60°
19
77°
58°
20
76°
60°
21
77°
61°
22
81°
59°
23
78°
58°
24
72°
56°
25
75°
58°
26
78°
60°
27
80°
62°
28
80°
59°
29
78°
55°
30
71°
53°
31
71°
53°
1
72°
57°
2
72°
56°
3
73°
56°
4
72°
59°
5
72°
59°
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 71° to 86°, with overnight lows between 53° and 67°. The average high for August is 77° with an average low of 59°. 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.
