S
M
T
W
T
F
S
29
45°
33°
30
46°
36°
1
49°
35°
2
47°
35°
3
49°
33°
4
46°
31°
5
46°
32°
6
45°
33°
7
47°
32°
8
40°
30°
9
37°
31°
10
38°
30°
11
37°
31°
12
38°
28°
13
37°
27°
14
38°
22°
15
36°
22°
16
35°
23°
17
36°
24°
18
35°
28°
19
37°
27°
20
40°
24°
21
37°
23°
22
35°
23°
23
32°
16°
24
35°
22°
25
30°
19°
26
34°
13°
27
31°
11°
28
26°
12°
29
29°
8°
30
27°
14°
31
29°
25°
1
41°
18°
2
39°
14°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Delmar
Delmar's December 2026 forecast shows daily high temperatures ranging from 26° to 49°, with overnight lows between 8° and 36°. The average high for December is 38° with an average low of 25°. 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 Delmar. See also: January | February | March.
