S
M
T
W
T
F
S
26
48°
39°
27
50°
39°
28
63°
30°
29
68°
37°
30
68°
45°
1
77°
48°
2
79°
45°
3
69°
43°
4
61°
44°
5
57°
45°
6
71°
49°
7
80°
53°
8
81°
51°
9
87°
54°
10
91°
58°
11
92°
59°
12
93°
58°
13
92°
59°
14
88°
54°
15
84°
54°
16
73°
45°
17
76°
48°
18
77°
50°
19
77°
50°
20
78°
49°
21
77°
50°
22
78°
50°
23
78°
51°
24
79°
51°
25
79°
50°
26
78°
51°
27
78°
51°
28
73°
49°
29
71°
48°
30
72°
49°
31
73°
51°
1
74°
52°
2
78°
51°
3
77°
52°
4
77°
52°
5
76°
51°
6
76°
48°
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 57° to 93°, with overnight lows between 43° and 59°. The average high for May is 78° with an average low of 51°. 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.
