S
M
T
W
T
F
S
26
68°
50°
27
68°
46°
28
57°
41°
29
54°
41°
30
50°
37°
1
52°
36°
2
63°
34°
3
72°
52°
4
70°
43°
5
52°
36°
6
46°
30°
7
59°
34°
8
72°
41°
9
63°
43°
10
63°
37°
11
66°
36°
12
77°
52°
13
68°
46°
14
75°
41°
15
86°
54°
16
81°
57°
17
74°
63°
18
73°
53°
19
57°
40°
20
59°
42°
21
61°
47°
22
65°
49°
23
70°
52°
24
74°
53°
25
73°
55°
26
74°
55°
27
75°
53°
28
76°
55°
29
77°
56°
30
73°
50°
31
77°
57°
1
78°
56°
2
74°
55°
3
69°
51°
4
70°
52°
5
73°
57°
6
75°
58°
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 78°, with overnight lows between 40° and 63°. The average high for May is 71° with an average low of 53°. 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.