S
M
T
W
T
F
S
26
59°
37°
27
61°
43°
28
59°
43°
29
57°
41°
30
59°
37°
1
69°
47°
2
75°
55°
3
67°
50°
4
66°
52°
5
60°
50°
6
55°
42°
7
58°
43°
8
62°
47°
9
67°
51°
10
65°
50°
11
64°
48°
12
62°
48°
13
61°
47°
14
59°
47°
15
58°
44°
16
66°
52°
17
66°
51°
18
63°
48°
19
65°
52°
20
63°
51°
21
60°
49°
22
60°
46°
23
61°
46°
24
60°
47°
25
64°
46°
26
61°
45°
27
62°
51°
28
66°
52°
29
62°
53°
30
64°
47°
31
61°
46°
1
60°
46°
2
61°
47°
3
61°
46°
4
62°
48°
5
64°
48°
6
65°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Hamm
Hamm's May 2026 forecast shows daily high temperatures ranging from 55° to 75°, with overnight lows between 42° and 55°. The average high for May is 63° with an average low of 48°. 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 Hamm. See also: June | July | August.