S
M
T
W
T
F
S
26
N/A
27
N/A
28
N/A
29
N/A
30
N/A
1
N/A
2
N/A
3
N/A
4
N/A
5
N/A
6
N/A
7
N/A
8
N/A
9
N/A
10
N/A
11
N/A
12
N/A
13
N/A
14
N/A
15
N/A
16
86°
68°
17
90°
72°
18
80°
74°
19
80°
56°
20
67°
51°
21
73°
54°
22
78°
59°
23
80°
63°
24
81°
64°
25
81°
62°
26
83°
63°
27
82°
63°
28
80°
64°
29
81°
59°
30
81°
63°
31
84°
64°
1
85°
64°
2
85°
63°
3
79°
61°
4
77°
57°
5
80°
63°
6
85°
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 67° to 90°, with overnight lows between 51° and 74°. The average high for May is 81° with an average low of 62°. 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.