S
M
T
W
T
F
S
29
46°
39°
30
51°
33°
1
52°
34°
2
45°
29°
3
48°
25°
4
43°
24°
5
36°
22°
6
36°
22°
7
37°
23°
8
40°
24°
9
40°
30°
10
44°
29°
11
40°
24°
12
36°
25°
13
34°
22°
14
35°
20°
15
33°
18°
16
31°
15°
17
29°
20°
18
33°
30°
19
37°
32°
20
45°
26°
21
46°
31°
22
43°
34°
23
47°
35°
24
47°
30°
25
46°
29°
26
43°
29°
27
42°
30°
28
43°
32°
29
45°
34°
30
46°
32°
31
47°
28°
1
46°
26°
2
42°
24°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Imperial
Imperial's December 2026 forecast shows daily high temperatures ranging from 29° to 52°, with overnight lows between 15° and 39°. The average high for December is 42° with an average low of 27°. 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 Imperial. See also: January | February | March.