S
M
T
W
T
F
S
26
59°
37°
27
63°
36°
28
63°
41°
29
63°
39°
30
64°
37°
1
73°
41°
2
75°
55°
3
70°
54°
4
66°
55°
5
57°
52°
6
52°
45°
7
55°
43°
8
61°
39°
9
66°
43°
10
64°
46°
11
50°
41°
12
54°
41°
13
N/A
14
51°
37°
15
55°
40°
16
54°
40°
17
61°
46°
18
58°
45°
19
65°
49°
20
68°
51°
21
71°
52°
22
71°
53°
23
67°
49°
24
67°
50°
25
68°
51°
26
63°
51°
27
61°
47°
28
62°
46°
29
62°
47°
30
63°
47°
31
63°
48°
1
64°
48°
2
68°
54°
3
72°
56°
4
73°
57°
5
73°
57°
6
72°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Hamm
Hamm's May 2026 forecast shows daily high temperatures ranging from 51° to 73°, with overnight lows between 37° and 57°. The average high for May is 65° with an average low of 49°. 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.