S
M
T
W
T
F
S
26
54°
31°
27
55°
32°
28
57°
33°
29
57°
32°
30
56°
32°
1
57°
35°
2
59°
33°
3
58°
32°
4
62°
41°
5
68°
39°
6
63°
34°
7
60°
36°
8
69°
44°
9
71°
45°
10
71°
39°
11
61°
35°
12
61°
36°
13
63°
42°
14
62°
41°
15
61°
43°
16
62°
45°
17
64°
46°
18
71°
38°
19
67°
41°
20
68°
40°
21
67°
39°
22
66°
38°
23
67°
37°
24
66°
38°
25
69°
39°
26
69°
41°
27
70°
41°
28
69°
39°
29
69°
45°
30
70°
47°
31
70°
43°
1
71°
50°
2
71°
47°
3
72°
45°
4
71°
51°
5
78°
51°
6
76°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Keene
Keene's May 2026 forecast shows daily high temperatures ranging from 54° to 78°, with overnight lows between 31° and 51°. The average high for May is 65° with an average low of 40°. 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 Keene. See also: June | July | August.
