S
M
T
W
T
F
S
26
62°
37°
27
71°
33°
28
64°
34°
29
68°
46°
30
61°
47°
1
65°
35°
2
57°
37°
3
57°
40°
4
68°
49°
5
77°
59°
6
66°
53°
7
59°
40°
8
57°
39°
9
57°
43°
10
60°
44°
11
61°
44°
12
62°
44°
13
59°
45°
14
62°
48°
15
64°
47°
16
71°
51°
17
70°
52°
18
72°
51°
19
71°
51°
20
71°
52°
21
70°
50°
22
70°
45°
23
63°
43°
24
63°
45°
25
64°
45°
26
65°
46°
27
65°
45°
28
66°
46°
29
65°
47°
30
65°
46°
31
66°
55°
1
70°
52°
2
68°
48°
3
68°
52°
4
72°
55°
5
70°
51°
6
71°
55°
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 57° to 77°, with overnight lows between 37° and 59°. The average high for May is 66° 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 May weather will actually feel in Chester. See also: June | July | August.