S
M
T
W
T
F
S
26
84°
66°
27
84°
71°
28
81°
68°
29
72°
63°
30
69°
58°
1
65°
55°
2
72°
50°
3
77°
46°
4
78°
56°
5
76°
60°
6
75°
55°
7
71°
53°
8
74°
50°
9
79°
62°
10
81°
61°
11
78°
59°
12
82°
50°
13
86°
51°
14
83°
60°
15
91°
62°
16
87°
71°
17
89°
66°
18
92°
75°
19
90°
70°
20
80°
69°
21
79°
69°
22
77°
69°
23
79°
68°
24
79°
67°
25
79°
69°
26
82°
68°
27
84°
68°
28
85°
69°
29
86°
68°
30
85°
67°
31
87°
68°
1
88°
67°
2
90°
69°
3
85°
69°
4
85°
65°
5
86°
67°
6
89°
71°
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 77° to 90°, with overnight lows between 65° and 71°. The average high for May is 84° with an average low of 68°. 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.