S
M
T
W
T
F
S
26
88°
68°
27
86°
66°
28
88°
68°
29
88°
68°
30
90°
73°
31
91°
70°
1
93°
72°
2
93°
73°
3
93°
73°
4
91°
75°
5
93°
73°
6
95°
73°
7
97°
75°
8
97°
77°
9
95°
79°
10
93°
77°
11
90°
72°
12
87°
54°
13
83°
50°
14
82°
50°
15
83°
50°
16
83°
52°
17
83°
48°
18
83°
50°
19
81°
48°
20
83°
47°
21
85°
47°
22
89°
51°
23
89°
50°
24
90°
51°
25
84°
46°
26
83°
49°
27
81°
49°
28
81°
47°
29
82°
48°
30
78°
46°
31
81°
48°
1
79°
45°
2
78°
44°
3
77°
44°
4
77°
42°
5
76°
42°
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 76° to 90°, with overnight lows between 42° and 54°. The average high for August is 82° with an average low of 48°. 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.
