S
M
T
W
T
F
S
26
77°
55°
27
72°
52°
28
64°
48°
29
79°
59°
30
72°
55°
1
63°
54°
2
61°
45°
3
68°
41°
4
78°
51°
5
81°
58°
6
81°
65°
7
78°
53°
8
68°
52°
9
74°
54°
10
76°
61°
11
77°
57°
12
75°
58°
13
77°
54°
14
75°
58°
15
80°
58°
16
78°
56°
17
81°
57°
18
82°
60°
19
82°
60°
20
84°
62°
21
82°
61°
22
79°
54°
23
76°
54°
24
76°
56°
25
78°
58°
26
78°
57°
27
76°
56°
28
77°
56°
29
78°
57°
30
80°
60°
31
79°
62°
1
81°
65°
2
82°
64°
3
79°
64°
4
80°
63°
5
82°
65°
6
84°
66°
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 68° to 84°, with overnight lows between 51° and 66°. The average high for May is 79° with an average low of 59°. 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.