S
M
T
W
T
F
S
26
66°
39°
27
70°
43°
28
63°
46°
29
63°
46°
30
70°
48°
1
77°
43°
2
72°
46°
3
66°
54°
4
59°
52°
5
63°
50°
6
57°
45°
7
63°
45°
8
66°
41°
9
70°
43°
10
55°
36°
11
55°
34°
12
59°
32°
13
55°
43°
14
55°
43°
15
57°
41°
16
59°
46°
17
60°
42°
18
58°
49°
19
64°
52°
20
67°
50°
21
71°
53°
22
76°
56°
23
77°
54°
24
76°
57°
25
75°
54°
26
70°
51°
27
69°
50°
28
70°
51°
29
59°
43°
30
63°
46°
31
61°
47°
1
60°
44°
2
61°
45°
3
64°
49°
4
64°
51°
5
67°
52°
6
68°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Chesham
Chesham's May 2026 forecast shows daily high temperatures ranging from 58° to 77°, with overnight lows between 42° and 57°. The average high for May is 66° with an average low of 50°. 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 Chesham. See also: June | July | August.