S
M
T
W
T
F
S
26
84°
59°
27
81°
52°
28
80°
55°
29
81°
54°
30
81°
55°
31
83°
53°
1
82°
53°
2
76°
58°
3
84°
59°
4
83°
57°
5
82°
58°
6
82°
57°
7
80°
58°
8
78°
59°
9
82°
58°
10
83°
59°
11
82°
60°
12
83°
58°
13
81°
57°
14
83°
58°
15
78°
57°
16
Hist. Avg.
71°
54°
17
Hist. Avg.
71°
54°
18
Hist. Avg.
71°
54°
19
Hist. Avg.
71°
54°
20
Hist. Avg.
71°
54°
21
Hist. Avg.
71°
54°
22
Hist. Avg.
71°
54°
23
Hist. Avg.
71°
53°
24
Hist. Avg.
71°
53°
25
Hist. Avg.
70°
53°
26
Hist. Avg.
70°
53°
27
Hist. Avg.
70°
53°
28
Hist. Avg.
70°
52°
29
Hist. Avg.
70°
52°
30
Hist. Avg.
70°
52°
31
Hist. Avg.
69°
52°
1
Hist. Avg.
69°
51°
2
Hist. Avg.
69°
51°
3
Hist. Avg.
69°
51°
4
Hist. Avg.
69°
51°
5
Hist. Avg.
68°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Chester
Chester's August 2026 forecast shows daily high temperatures ranging from 76° to 84°, with overnight lows between 52° and 60°. The average high for August is 81° with an average low of 57°. 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.