S
M
T
W
T
F
S
26
70°
53°
27
69°
56°
28
71°
53°
29
68°
51°
30
71°
51°
31
73°
57°
1
73°
55°
2
71°
53°
3
70°
52°
4
70°
50°
5
71°
51°
6
70°
51°
7
70°
52°
8
71°
50°
9
70°
50°
10
71°
51°
11
73°
56°
12
71°
57°
13
68°
56°
14
73°
57°
15
70°
53°
16
71°
56°
17
70°
55°
18
68°
54°
19
68°
52°
20
69°
54°
21
72°
55°
22
72°
53°
23
69°
54°
24
67°
54°
25
67°
53°
26
68°
52°
27
67°
53°
28
66°
53°
29
70°
52°
30
71°
54°
31
72°
53°
1
70°
53°
2
69°
52°
3
69°
53°
4
68°
50°
5
69°
48°
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 66° to 73°, with overnight lows between 48° and 57°. The average high for August is 70° with an average low of 53°. 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.
