S
M
T
W
T
F
S
26
90°
58°
27
90°
59°
28
91°
58°
29
93°
59°
30
90°
58°
31
90°
54°
1
81°
54°
2
81°
53°
3
82°
54°
4
84°
57°
5
88°
57°
6
89°
58°
7
89°
58°
8
91°
57°
9
91°
54°
10
88°
53°
11
88°
54°
12
89°
55°
13
88°
49°
14
80°
51°
15
80°
53°
16
86°
55°
17
87°
54°
18
87°
54°
19
86°
53°
20
79°
50°
21
78°
45°
22
75°
43°
23
74°
44°
24
75°
47°
25
78°
50°
26
83°
52°
27
83°
41°
28
77°
41°
29
71°
40°
30
70°
41°
31
72°
44°
1
74°
45°
2
73°
41°
3
72°
42°
4
72°
40°
5
70°
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 70° to 93°, with overnight lows between 40° and 59°. The average high for August is 82° with an average low of 51°. 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.
