S
M
T
W
T
F
S
29
48°
31°
30
48°
30°
1
42°
27°
2
42°
28°
3
41°
32°
4
44°
34°
5
45°
35°
6
47°
32°
7
47°
30°
8
44°
28°
9
40°
28°
10
39°
30°
11
42°
32°
12
42°
29°
13
44°
30°
14
42°
30°
15
41°
29°
16
42°
23°
17
45°
22°
18
34°
18°
19
32°
17°
20
32°
11°
21
29°
11°
22
23°
12°
23
25°
11°
24
26°
15°
25
27°
17°
26
32°
20°
27
34°
24°
28
32°
27°
29
35°
27°
30
37°
26°
31
35°
22°
1
35°
15°
2
30°
13°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in South Bend
South Bend's December 2026 forecast shows daily high temperatures ranging from 23° to 48°, with overnight lows between 11° and 35°. The average high for December is 38° with an average low of 24°. 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 South Bend. See also: January | February | March.
