S
M
T
W
T
F
S
29
43°
25°
30
42°
26°
1
43°
26°
2
44°
31°
3
45°
32°
4
50°
35°
5
51°
37°
6
44°
35°
7
46°
32°
8
41°
31°
9
40°
25°
10
40°
22°
11
55°
40°
12
56°
27°
13
57°
25°
14
45°
22°
15
39°
24°
16
42°
22°
17
39°
26°
18
45°
35°
19
47°
37°
20
54°
37°
21
54°
35°
22
53°
36°
23
52°
38°
24
57°
32°
25
57°
24°
26
56°
20°
27
37°
26°
28
43°
32°
29
51°
35°
30
51°
37°
31
54°
38°
1
54°
33°
2
56°
25°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Delbarton
Delbarton's December 2026 forecast shows daily high temperatures ranging from 37° to 57°, with overnight lows between 20° and 40°. The average high for December is 48° with an average low of 30°. 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 Delbarton. See also: January | February | March.