S
M
T
W
T
F
S
26
64°
43°
27
66°
48°
28
55°
41°
29
61°
41°
30
66°
45°
1
77°
43°
2
66°
52°
3
59°
50°
4
55°
45°
5
57°
43°
6
50°
39°
7
57°
37°
8
64°
45°
9
64°
45°
10
55°
41°
11
52°
41°
12
57°
39°
13
52°
41°
14
54°
41°
15
55°
41°
16
57°
43°
17
57°
46°
18
57°
43°
19
64°
48°
20
63°
51°
21
73°
55°
22
80°
58°
23
78°
55°
24
82°
61°
25
84°
60°
26
75°
52°
27
70°
51°
28
73°
54°
29
73°
52°
30
66°
49°
31
66°
48°
1
65°
49°
2
60°
45°
3
60°
48°
4
61°
46°
5
61°
48°
6
62°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Cromwell
Cromwell's May 2026 forecast shows daily high temperatures ranging from 60° to 84°, with overnight lows between 45° and 61°. The average high for May is 70° with an average low of 52°. 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 Cromwell. See also: June | July | August.
