S
M
T
W
T
F
S
26
77°
57°
27
78°
59°
28
78°
54°
29
77°
58°
30
79°
60°
31
78°
54°
1
79°
60°
2
82°
61°
3
78°
54°
4
80°
53°
5
77°
54°
6
78°
53°
7
80°
53°
8
77°
54°
9
76°
59°
10
82°
58°
11
79°
55°
12
81°
58°
13
82°
60°
14
80°
60°
15
77°
59°
16
82°
52°
17
81°
51°
18
75°
52°
19
74°
54°
20
73°
52°
21
75°
50°
22
74°
56°
23
75°
57°
24
79°
58°
25
82°
57°
26
82°
48°
27
77°
48°
28
72°
49°
29
72°
49°
30
73°
53°
31
75°
55°
1
78°
56°
2
79°
54°
3
78°
49°
4
78°
55°
5
77°
52°
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 82°, with overnight lows between 48° and 61°. The average high for August is 78° with an average low of 55°. 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.
