S
M
T
W
T
F
S
29
39°
30°
30
38°
29°
1
37°
23°
2
38°
22°
3
35°
24°
4
33°
32°
5
38°
34°
6
43°
38°
7
47°
30°
8
48°
28°
9
42°
24°
10
34°
23°
11
35°
24°
12
34°
23°
13
34°
25°
14
32°
27°
15
34°
26°
16
35°
29°
17
35°
29°
18
37°
28°
19
36°
31°
20
44°
28°
21
46°
23°
22
38°
25°
23
36°
28°
24
40°
27°
25
40°
26°
26
37°
18°
27
34°
14°
28
32°
15°
29
26°
9°
30
28°
8°
31
27°
11°
1
22°
15°
2
26°
15°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Evanston
Evanston's December 2026 forecast shows daily high temperatures ranging from 22° to 48°, with overnight lows between 8° and 38°. The average high for December is 36° with an average low of 24°. 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 Evanston. See also: January | February | March.
