S
M
T
W
T
F
S
26
77°
57°
27
77°
59°
28
78°
56°
29
77°
57°
30
78°
64°
31
81°
64°
1
85°
63°
2
84°
64°
3
84°
63°
4
83°
56°
5
78°
55°
6
76°
53°
7
76°
55°
8
76°
55°
9
77°
56°
10
77°
61°
11
78°
61°
12
82°
63°
13
83°
62°
14
82°
60°
15
83°
55°
16
77°
55°
17
78°
54°
18
78°
57°
19
79°
55°
20
74°
53°
21
78°
55°
22
79°
60°
23
80°
60°
24
81°
56°
25
74°
52°
26
74°
56°
27
77°
59°
28
73°
57°
29
81°
60°
30
82°
57°
31
79°
55°
1
73°
56°
2
74°
54°
3
72°
57°
4
73°
58°
5
78°
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 72° to 85°, with overnight lows between 52° and 64°. The average high for August is 78° with an average low of 58°. 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.
