S
M
T
W
T
F
S
26
92°
69°
27
91°
70°
28
87°
69°
29
92°
70°
30
91°
70°
31
92°
69°
1
90°
70°
2
90°
70°
3
85°
61°
4
85°
65°
5
86°
62°
6
91°
61°
7
88°
60°
8
85°
61°
9
85°
65°
10
86°
64°
11
88°
60°
12
85°
59°
13
83°
60°
14
83°
61°
15
84°
62°
16
83°
59°
17
83°
58°
18
84°
59°
19
83°
59°
20
83°
66°
21
85°
67°
22
90°
66°
23
91°
66°
24
90°
60°
25
86°
58°
26
81°
57°
27
81°
57°
28
82°
59°
29
84°
56°
30
81°
59°
31
81°
59°
1
82°
61°
2
81°
62°
3
84°
57°
4
83°
54°
5
79°
53°
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 79° to 92°, with overnight lows between 53° and 70°. The average high for August is 86° with an average low of 62°. 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.
