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