S
M
T
W
T
F
S
29
48°
39°
30
52°
40°
1
53°
41°
2
53°
39°
3
55°
38°
4
47°
36°
5
51°
35°
6
51°
37°
7
50°
35°
8
44°
31°
9
42°
28°
10
39°
28°
11
38°
34°
12
40°
32°
13
43°
32°
14
37°
24°
15
40°
26°
16
40°
31°
17
42°
32°
18
40°
33°
19
48°
29°
20
45°
20°
21
39°
21°
22
34°
23°
23
33°
28°
24
37°
26°
25
48°
26°
26
44°
21°
27
38°
18°
28
34°
20°
29
35°
19°
30
37°
32°
31
47°
27°
1
51°
20°
2
41°
19°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Delta
Delta's December 2026 forecast shows daily high temperatures ranging from 33° to 55°, with overnight lows between 18° and 41°. The average high for December is 43° with an average low of 29°. 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 Delta. See also: January | February | March.
