S
M
T
W
T
F
S
26
33°
17°
27
48°
14°
28
59°
24°
29
59°
25°
30
67°
31°
1
74°
35°
2
66°
41°
3
73°
36°
4
55°
31°
5
50°
28°
6
68°
22°
7
71°
39°
8
75°
42°
9
65°
44°
10
78°
40°
11
67°
44°
12
75°
33°
13
85°
46°
14
66°
44°
15
62°
39°
16
60°
39°
17
45°
31°
18
57°
29°
19
62°
32°
20
56°
37°
21
59°
33°
22
69°
35°
23
75°
38°
24
79°
46°
25
87°
45°
26
93°
56°
27
88°
64°
28
93°
58°
29
89°
58°
30
75°
54°
31
56°
34°
1
53°
33°
2
53°
44°
3
63°
47°
4
73°
46°
5
78°
49°
6
72°
48°
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 72° to 78°, with overnight lows between 46° and 49°. The average high for May is 74° with an average low of 48°. 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.