S
M
T
W
T
F
S
26
89°
49°
27
90°
47°
28
90°
49°
29
89°
48°
30
91°
49°
31
90°
47°
1
86°
44°
2
83°
43°
3
82°
46°
4
83°
41°
5
82°
44°
6
Hist. Avg.
88°
59°
7
Hist. Avg.
87°
59°
8
Hist. Avg.
87°
59°
9
Hist. Avg.
87°
59°
10
Hist. Avg.
87°
59°
11
Hist. Avg.
87°
59°
12
Hist. Avg.
87°
59°
13
Hist. Avg.
87°
59°
14
Hist. Avg.
87°
59°
15
Hist. Avg.
86°
58°
16
Hist. Avg.
86°
58°
17
Hist. Avg.
86°
58°
18
Hist. Avg.
86°
58°
19
Hist. Avg.
86°
58°
20
Hist. Avg.
86°
58°
21
Hist. Avg.
86°
58°
22
Hist. Avg.
86°
58°
23
Hist. Avg.
85°
58°
24
Hist. Avg.
85°
57°
25
Hist. Avg.
85°
57°
26
Hist. Avg.
85°
57°
27
Hist. Avg.
85°
57°
28
Hist. Avg.
85°
57°
29
Hist. Avg.
84°
57°
30
Hist. Avg.
84°
57°
31
Hist. Avg.
84°
57°
1
Hist. Avg.
84°
56°
2
Hist. Avg.
84°
56°
3
Hist. Avg.
84°
56°
4
Hist. Avg.
84°
56°
5
Hist. Avg.
83°
56°
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 82° to 91°, with overnight lows between 41° and 49°. The average high for August is 87° with an average low of 46°. 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.