S
M
T
W
T
F
S
29
67°
53°
30
70°
41°
1
58°
38°
2
55°
38°
3
56°
37°
4
58°
37°
5
61°
47°
6
61°
49°
7
58°
50°
8
62°
49°
9
61°
46°
10
56°
41°
11
56°
40°
12
63°
49°
13
68°
50°
14
69°
46°
15
58°
43°
16
62°
43°
17
63°
44°
18
55°
41°
19
55°
41°
20
56°
43°
21
58°
44°
22
61°
47°
23
66°
44°
24
61°
40°
25
56°
36°
26
55°
33°
27
55°
37°
28
62°
40°
29
67°
38°
30
55°
35°
31
54°
36°
1
54°
33°
2
55°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Elgin
Elgin's December 2026 forecast shows daily high temperatures ranging from 54° to 70°, with overnight lows between 33° and 53°. The average high for December is 60° with an average low of 42°. 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 Elgin. See also: January | February | March.
