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