S
M
T
W
T
F
S
26
54°
46°
27
64°
43°
28
59°
53°
29
59°
54°
30
68°
52°
1
62°
46°
2
59°
50°
3
62°
44°
4
71°
54°
5
73°
62°
6
69°
62°
7
63°
54°
8
69°
48°
9
67°
60°
10
76°
56°
11
64°
53°
12
64°
47°
13
73°
55°
14
65°
53°
15
71°
57°
16
76°
66°
17
80°
64°
18
86°
67°
19
89°
68°
20
80°
62°
21
71°
61°
22
75°
59°
23
74°
59°
24
73°
59°
25
75°
60°
26
76°
59°
27
76°
63°
28
79°
61°
29
72°
63°
30
76°
64°
31
78°
62°
1
73°
60°
2
74°
59°
3
73°
58°
4
74°
59°
5
76°
66°
6
83°
68°
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 65° to 89°, with overnight lows between 53° and 68°. The average high for May is 76° with an average low of 61°. 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.