S
M
T
W
T
F
S
29
49°
32°
30
51°
42°
1
55°
45°
2
51°
45°
3
52°
44°
4
54°
45°
5
53°
44°
6
56°
43°
7
59°
41°
8
53°
34°
9
48°
30°
10
47°
37°
11
63°
34°
12
65°
28°
13
61°
27°
14
46°
29°
15
49°
26°
16
50°
30°
17
48°
40°
18
51°
42°
19
61°
42°
20
61°
41°
21
60°
40°
22
59°
45°
23
62°
34°
24
63°
26°
25
62°
24°
26
42°
26°
27
45°
31°
28
50°
41°
29
55°
42°
30
59°
43°
31
60°
42°
1
62°
34°
2
62°
27°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in DeWitt
DeWitt's December 2026 forecast shows daily high temperatures ranging from 42° to 65°, with overnight lows between 24° and 45°. The average high for December is 55° with an average low of 36°. 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 DeWitt. See also: January | February | March.
