S
M
T
W
T
F
S
29
57°
41°
30
56°
42°
1
57°
36°
2
44°
30°
3
44°
32°
4
50°
36°
5
52°
39°
6
44°
33°
7
41°
27°
8
40°
25°
9
40°
26°
10
41°
31°
11
47°
30°
12
48°
33°
13
47°
30°
14
41°
27°
15
42°
31°
16
41°
34°
17
42°
31°
18
45°
26°
19
41°
25°
20
40°
23°
21
39°
25°
22
40°
30°
23
46°
29°
24
41°
26°
25
39°
24°
26
40°
24°
27
39°
25°
28
39°
24°
29
40°
27°
30
39°
25°
31
40°
22°
1
38°
18°
2
38°
18°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Kewanee
Kewanee's December 2026 forecast shows daily high temperatures ranging from 38° to 57°, with overnight lows between 18° and 42°. The average high for December is 43° with an average low of 29°. 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 Kewanee. See also: January | February | March.
