S
M
T
W
T
F
S
29
42°
36°
30
45°
40°
1
45°
39°
2
44°
35°
3
39°
32°
4
36°
30°
5
36°
29°
6
35°
28°
7
35°
31°
8
36°
30°
9
36°
27°
10
34°
26°
11
34°
27°
12
35°
27°
13
33°
28°
14
34°
29°
15
35°
30°
16
40°
35°
17
42°
38°
18
42°
31°
19
39°
30°
20
35°
31°
21
44°
36°
22
43°
35°
23
41°
34°
24
39°
38°
25
44°
37°
26
44°
36°
27
42°
36°
28
41°
35°
29
41°
36°
30
44°
35°
31
42°
34°
1
42°
33°
2
40°
28°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Hamm
Hamm's December 2026 forecast shows daily high temperatures ranging from 33° to 45°, with overnight lows between 26° and 40°. The average high for December is 39° with an average low of 33°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how December weather will actually feel in Hamm. See also: January | February | March.
