S
M
T
W
T
F
S
26
62°
40°
27
71°
37°
28
66°
37°
29
65°
47°
30
58°
46°
1
63°
39°
2
59°
44°
3
58°
39°
4
73°
36°
5
83°
46°
6
71°
53°
7
62°
44°
8
60°
40°
9
55°
44°
10
68°
44°
11
61°
43°
12
66°
35°
13
66°
41°
14
64°
47°
15
66°
43°
16
78°
40°
17
89°
54°
18
92°
57°
19
94°
62°
20
88°
62°
21
63°
48°
22
66°
43°
23
54°
48°
24
55°
53°
25
75°
53°
26
80°
58°
27
84°
58°
28
81°
51°
29
77°
52°
30
72°
48°
31
75°
51°
1
77°
53°
2
76°
55°
3
78°
57°
4
78°
58°
5
80°
60°
6
79°
54°
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 55° to 84°, with overnight lows between 48° and 60°. The average high for May is 76° with an average low of 54°. 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.