S
M
T
W
T
F
S
26
46°
41°
27
55°
39°
28
61°
45°
29
68°
48°
30
73°
52°
1
75°
57°
2
70°
61°
3
64°
48°
4
60°
45°
5
73°
45°
6
78°
45°
7
78°
48°
8
75°
42°
9
80°
43°
10
80°
46°
11
85°
46°
12
83°
45°
13
79°
43°
14
79°
45°
15
76°
43°
16
77°
45°
17
67°
37°
18
70°
38°
19
70°
42°
20
72°
42°
21
72°
41°
22
71°
42°
23
72°
43°
24
73°
44°
25
74°
44°
26
74°
43°
27
73°
43°
28
72°
42°
29
70°
43°
30
70°
43°
31
71°
44°
1
73°
44°
2
75°
45°
3
75°
45°
4
74°
44°
5
75°
45°
6
72°
41°
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 60° to 85°, with overnight lows between 37° and 48°. The average high for May is 74° with an average low of 43°. 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.