S
M
T
W
T
F
S
29
42°
18°
30
30°
15°
1
31°
18°
2
41°
23°
3
43°
22°
4
40°
21°
5
35°
21°
6
32°
10°
7
27°
8°
8
38°
21°
9
43°
21°
10
42°
20°
11
42°
20°
12
40°
19°
13
41°
20°
14
38°
18°
15
37°
18°
16
38°
12°
17
37°
8°
18
31°
3°
19
28°
4°
20
24°
18°
21
34°
14°
22
35°
10°
23
33°
15°
24
34°
12°
25
34°
18°
26
35°
15°
27
38°
3°
28
33°
3°
29
22°
11°
30
28°
1°
31
26°
8°
1
23°
17°
2
33°
17°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Hammond
Hammond's December 2026 forecast shows daily high temperatures ranging from 22° to 43°, with overnight lows between 1° and 23°. The average high for December is 35° with an average low of 14°. 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 Hammond. See also: January | February | March.
