S
M
T
W
T
F
S
29
52°
35°
30
51°
28°
1
47°
23°
2
38°
22°
3
45°
34°
4
49°
33°
5
45°
33°
6
38°
28°
7
37°
21°
8
35°
22°
9
39°
26°
10
43°
29°
11
46°
28°
12
49°
28°
13
45°
30°
14
42°
24°
15
43°
23°
16
42°
23°
17
37°
18°
18
35°
16°
19
34°
14°
20
32°
13°
21
30°
25°
22
35°
15°
23
36°
19°
24
34°
13°
25
32°
19°
26
32°
26°
27
36°
23°
28
35°
15°
29
33°
17°
30
32°
18°
31
32°
12°
1
33°
8°
2
30°
15°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Dearborn
Dearborn's December 2026 forecast shows daily high temperatures ranging from 30° to 52°, with overnight lows between 8° and 35°. The average high for December is 39° with an average low of 22°. 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 Dearborn. See also: January | February | March.