S
M
T
W
T
F
S
26
56°
37°
27
57°
40°
28
61°
44°
29
62°
45°
30
62°
45°
1
63°
44°
2
63°
45°
3
61°
43°
4
59°
40°
5
58°
39°
6
58°
40°
7
59°
40°
8
59°
40°
9
60°
43°
10
64°
47°
11
67°
47°
12
66°
46°
13
63°
42°
14
63°
44°
15
64°
44°
16
62°
42°
17
61°
42°
18
60°
43°
19
61°
41°
20
61°
42°
21
60°
41°
22
66°
45°
23
64°
44°
24
64°
47°
25
66°
49°
26
66°
49°
27
70°
48°
28
71°
50°
29
71°
50°
30
72°
47°
31
70°
44°
1
68°
47°
2
68°
46°
3
69°
42°
4
68°
49°
5
69°
51°
6
70°
47°
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 56° to 72°, with overnight lows between 37° and 51°. The average high for May is 64° with an average low of 44°. 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.