S
M
T
W
T
F
S
29
55°
28°
30
55°
26°
1
54°
25°
2
53°
25°
3
55°
26°
4
54°
25°
5
54°
25°
6
55°
26°
7
53°
25°
8
52°
24°
9
52°
25°
10
56°
25°
11
60°
26°
12
59°
28°
13
62°
27°
14
57°
26°
15
56°
24°
16
56°
25°
17
55°
24°
18
54°
23°
19
55°
24°
20
56°
23°
21
58°
24°
22
56°
23°
23
55°
24°
24
56°
24°
25
59°
26°
26
57°
29°
27
62°
24°
28
54°
24°
29
56°
25°
30
59°
26°
31
61°
26°
1
60°
28°
2
63°
30°
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 52° to 63°, with overnight lows between 23° and 30°. The average high for December is 56° with an average low of 25°. 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.
