S
M
T
W
T
F
S
26
77°
61°
27
81°
64°
28
81°
64°
29
76°
63°
30
81°
61°
31
77°
58°
1
75°
58°
2
76°
59°
3
77°
63°
4
81°
64°
5
82°
63°
6
83°
64°
7
79°
62°
8
81°
63°
9
82°
62°
10
81°
55°
11
75°
57°
12
76°
58°
13
75°
56°
14
78°
56°
15
75°
58°
16
74°
62°
17
74°
61°
18
75°
59°
19
74°
56°
20
74°
56°
21
75°
60°
22
76°
61°
23
75°
59°
24
79°
60°
25
79°
54°
26
78°
53°
27
73°
54°
28
72°
55°
29
71°
59°
30
72°
58°
31
73°
59°
1
77°
53°
2
71°
53°
3
72°
54°
4
72°
52°
5
71°
51°
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 71° to 83°, with overnight lows between 51° and 64°. The average high for August is 76° with an average low of 59°. 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.
