S
M
T
W
T
F
S
30
17°
8°
1
27°
8°
2
41°
5°
3
38°
11°
4
31°
15°
5
49°
20°
6
40°
19°
7
28°
21°
8
48°
20°
9
62°
24°
10
43°
31°
11
37°
26°
12
33°
14°
13
14°
-1°
14
26°
-3°
15
63°
19°
16
64°
29°
17
55°
24°
18
54°
15°
19
48°
11°
20
52°
20°
21
48°
23°
22
63°
32°
23
56°
30°
24
65°
31°
25
45°
32°
26
68°
31°
27
65°
33°
28
47°
9°
29
28°
8°
30
51°
16°
31
59°
23°
1
48°
26°
2
29°
24°
3
39°
27°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Elgin
Elgin's December 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for December is ° with an average low of °. 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.
