S
M
T
W
T
F
S
26
52°
35°
27
47°
37°
28
47°
31°
29
50°
30°
30
48°
30°
1
43°
37°
2
51°
38°
3
47°
39°
4
44°
37°
5
48°
37°
6
48°
38°
7
50°
39°
8
49°
38°
9
50°
39°
10
52°
39°
11
51°
40°
12
51°
41°
13
50°
40°
14
69°
51°
15
53°
39°
16
54°
38°
17
54°
41°
18
55°
41°
19
55°
42°
20
56°
41°
21
55°
40°
22
55°
41°
23
56°
44°
24
56°
42°
25
57°
41°
26
57°
41°
27
61°
42°
28
63°
43°
29
64°
47°
30
63°
48°
31
62°
48°
1
63°
46°
2
65°
47°
3
65°
46°
4
64°
47°
5
65°
48°
6
67°
50°
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 43° to 69°, with overnight lows between 37° and 51°. The average high for May is 56° with an average low of 42°. 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.