S
M
T
W
T
F
S
29
39°
25°
30
42°
26°
1
41°
28°
2
41°
24°
3
38°
17°
4
36°
16°
5
28°
27°
6
34°
28°
7
37°
29°
8
43°
27°
9
28°
16°
10
44°
31°
11
Hist. Avg.
38°
25°
12
Hist. Avg.
38°
25°
13
Hist. Avg.
38°
25°
14
Hist. Avg.
37°
24°
15
Hist. Avg.
37°
24°
16
Hist. Avg.
37°
24°
17
Hist. Avg.
36°
24°
18
Hist. Avg.
36°
23°
19
Hist. Avg.
36°
23°
20
Hist. Avg.
36°
23°
21
Hist. Avg.
35°
23°
22
Hist. Avg.
35°
22°
23
Hist. Avg.
35°
22°
24
Hist. Avg.
35°
22°
25
Hist. Avg.
34°
22°
26
Hist. Avg.
34°
22°
27
Hist. Avg.
34°
21°
28
Hist. Avg.
34°
21°
29
Hist. Avg.
34°
21°
30
Hist. Avg.
33°
21°
31
Hist. Avg.
33°
20°
1
Hist. Avg.
33°
20°
2
Hist. Avg.
33°
20°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Vernon Hills
Vernon Hills's December 2026 forecast shows daily high temperatures ranging from 28° to 44°, with overnight lows between 16° and 31°. The average high for December is 38° 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 Vernon Hills. See also: January | February | March.
