S
M
T
W
T
F
S
26
57°
35°
27
62°
42°
28
69°
50°
29
52°
40°
30
53°
36°
1
50°
33°
2
49°
34°
3
58°
47°
4
71°
52°
5
60°
42°
6
55°
39°
7
52°
35°
8
56°
41°
9
59°
42°
10
62°
45°
11
60°
44°
12
62°
47°
13
65°
46°
14
62°
48°
15
62°
48°
16
61°
47°
17
62°
53°
18
68°
55°
19
68°
55°
20
69°
56°
21
73°
56°
22
71°
55°
23
72°
54°
24
66°
50°
25
64°
50°
26
66°
57°
27
73°
58°
28
72°
57°
29
69°
56°
30
67°
54°
31
72°
51°
1
67°
52°
2
67°
55°
3
68°
52°
4
68°
50°
5
69°
52°
6
68°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Chatham
Chatham's May 2026 forecast shows daily high temperatures ranging from 49° to 73°, with overnight lows between 33° and 58°. The average high for May is 64° with an average low of 49°. 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 Chatham. See also: June | July | August.