S
M
T
W
T
F
S
26
57°
41°
27
69°
38°
28
58°
42°
29
59°
47°
30
63°
47°
1
62°
37°
2
59°
44°
3
59°
38°
4
70°
44°
5
79°
57°
6
67°
54°
7
63°
49°
8
67°
40°
9
60°
49°
10
74°
46°
11
60°
47°
12
65°
42°
13
69°
51°
14
60°
49°
15
66°
48°
16
78°
47°
17
84°
60°
18
91°
63°
19
92°
67°
20
89°
65°
21
64°
51°
22
64°
51°
23
52°
48°
24
58°
50°
25
73°
56°
26
79°
65°
27
77°
61°
28
77°
52°
29
74°
55°
30
73°
47°
31
70°
49°
1
67°
51°
2
71°
49°
3
72°
52°
4
72°
57°
5
81°
60°
6
82°
60°
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 67° to 82°, with overnight lows between 47° and 65°. The average high for May is 75° with an average low of 55°. 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.