S
M
T
W
T
F
S
26
89°
72°
27
87°
74°
28
92°
75°
29
84°
67°
30
68°
60°
1
60°
52°
2
76°
50°
3
82°
50°
4
82°
52°
5
85°
67°
6
85°
60°
7
74°
56°
8
77°
62°
9
89°
67°
10
88°
66°
11
80°
65°
12
85°
59°
13
89°
57°
14
91°
64°
15
89°
66°
16
88°
69°
17
86°
73°
18
88°
76°
19
83°
64°
20
75°
64°
21
80°
66°
22
88°
67°
23
81°
67°
24
78°
66°
25
80°
65°
26
87°
70°
27
76°
68°
28
80°
70°
29
86°
70°
30
88°
69°
31
85°
71°
1
86°
69°
2
84°
65°
3
83°
64°
4
85°
65°
5
86°
68°
6
86°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Chester
Chester's May 2026 forecast shows daily high temperatures ranging from 76° to 88°, with overnight lows between 64° and 71°. The average high for May is 83° with an average low of 68°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Chester. See also: June | July | August.