S
M
T
W
T
F
S
26
46°
37°
27
46°
37°
28
50°
32°
29
55°
34°
30
52°
32°
1
52°
27°
2
66°
36°
3
68°
43°
4
57°
36°
5
48°
30°
6
54°
25°
7
63°
34°
8
72°
43°
9
59°
41°
10
63°
37°
11
75°
37°
12
72°
46°
13
75°
41°
14
79°
54°
15
82°
48°
16
77°
45°
17
71°
45°
18
54°
40°
19
54°
36°
20
65°
45°
21
65°
49°
22
71°
55°
23
74°
52°
24
78°
53°
25
80°
55°
26
74°
52°
27
77°
53°
28
76°
56°
29
77°
54°
30
76°
52°
31
78°
58°
1
76°
57°
2
70°
57°
3
71°
55°
4
73°
58°
5
77°
59°
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 54° to 80°, with overnight lows between 36° and 59°. The average high for May is 72° with an average low of 52°. 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.