S
M
T
W
T
F
S
26
83°
61°
27
84°
61°
28
83°
60°
29
82°
60°
30
82°
57°
31
75°
54°
1
75°
54°
2
76°
55°
3
77°
56°
4
77°
54°
5
78°
54°
6
79°
57°
7
79°
60°
8
76°
59°
9
76°
59°
10
80°
52°
11
78°
53°
12
81°
53°
13
80°
58°
14
81°
59°
15
82°
58°
16
82°
59°
17
83°
59°
18
82°
58°
19
80°
51°
20
77°
50°
21
75°
50°
22
74°
49°
23
74°
49°
24
74°
50°
25
77°
50°
26
80°
49°
27
80°
49°
28
77°
54°
29
75°
53°
30
73°
52°
31
79°
55°
1
79°
48°
2
78°
47°
3
72°
46°
4
73°
48°
5
73°
55°
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 84°, with overnight lows between 46° and 61°. The average high for August is 78° with an average low of 54°. 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.
