S
M
T
W
T
F
S
29
44°
19°
30
43°
16°
1
38°
8°
2
36°
11°
3
36°
16°
4
41°
14°
5
42°
16°
6
41°
14°
7
36°
10°
8
38°
12°
9
39°
16°
10
39°
16°
11
41°
18°
12
43°
18°
13
44°
17°
14
44°
18°
15
43°
19°
16
44°
20°
17
45°
20°
18
44°
21°
19
43°
20°
20
43°
20°
21
42°
19°
22
43°
20°
23
42°
20°
24
41°
23°
25
42°
20°
26
44°
21°
27
45°
20°
28
44°
16°
29
40°
14°
30
38°
16°
31
29°
5°
1
28°
11°
2
Hist. Avg.
38°
14°
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 28° to 45°, with overnight lows between 5° and 23°. The average high for December is 41° with an average low of 17°. 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.
