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