S
M
T
W
T
F
S
29
36°
30°
30
37°
34°
1
38°
35°
2
39°
36°
3
38°
33°
4
37°
34°
5
37°
29°
6
36°
29°
7
36°
28°
8
35°
28°
9
36°
33°
10
38°
35°
11
43°
37°
12
46°
38°
13
46°
36°
14
46°
36°
15
45°
33°
16
39°
32°
17
40°
35°
18
41°
34°
19
38°
32°
20
36°
31°
21
35°
33°
22
35°
34°
23
42°
37°
24
44°
33°
25
42°
34°
26
43°
34°
27
44°
35°
28
43°
34°
29
44°
33°
30
43°
35°
31
43°
38°
1
42°
38°
2
44°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Leonberg
Leonberg's December 2026 forecast shows daily high temperatures ranging from 35° to 46°, with overnight lows between 28° and 38°. The average high for December is 40° with an average low of 34°. 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 Leonberg. See also: January | February | March.
