S
M
T
W
T
F
S
26
56°
46°
27
68°
38°
28
69°
41°
29
69°
48°
30
74°
51°
1
68°
37°
2
61°
43°
3
65°
43°
4
74°
54°
5
82°
60°
6
79°
60°
7
69°
44°
8
67°
43°
9
66°
44°
10
72°
48°
11
71°
52°
12
71°
50°
13
74°
54°
14
75°
58°
15
77°
54°
16
77°
56°
17
79°
58°
18
80°
59°
19
81°
60°
20
80°
60°
21
81°
61°
22
75°
53°
23
74°
52°
24
73°
53°
25
75°
56°
26
77°
57°
27
75°
54°
28
75°
55°
29
76°
56°
30
76°
60°
31
77°
62°
1
78°
63°
2
79°
62°
3
78°
61°
4
79°
63°
5
82°
64°
6
84°
65°
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 61° to 84°, with overnight lows between 43° and 65°. The average high for May is 75° with an average low of 55°. 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.