S
M
T
W
T
F
S
26
83°
71°
27
91°
73°
28
84°
70°
29
71°
58°
30
63°
58°
1
60°
48°
2
76°
53°
3
77°
58°
4
82°
66°
5
84°
65°
6
81°
55°
7
78°
57°
8
76°
62°
9
77°
61°
10
81°
65°
11
87°
63°
12
83°
63°
13
83°
65°
14
82°
61°
15
85°
66°
16
84°
66°
17
85°
67°
18
85°
67°
19
86°
66°
20
86°
67°
21
82°
67°
22
80°
66°
23
81°
66°
24
86°
68°
25
83°
68°
26
81°
61°
27
80°
61°
28
82°
68°
29
84°
69°
30
87°
68°
31
89°
69°
1
89°
68°
2
90°
70°
3
90°
71°
4
91°
71°
5
90°
70°
6
89°
68°
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 60° to 91°, with overnight lows between 48° and 71°. The average high for May is 83° with an average low of 65°. 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.
