S
M
T
W
T
F
S
29
50°
25°
30
48°
23°
1
36°
22°
2
36°
24°
3
40°
26°
4
44°
32°
5
46°
35°
6
47°
36°
7
50°
32°
8
50°
27°
9
46°
28°
10
42°
25°
11
39°
21°
12
35°
21°
13
34°
20°
14
33°
18°
15
31°
19°
16
32°
17°
17
32°
16°
18
30°
21°
19
31°
21°
20
34°
26°
21
39°
30°
22
43°
28°
23
44°
24°
24
39°
18°
25
34°
18°
26
30°
19°
27
29°
23°
28
39°
19°
29
37°
16°
30
30°
13°
31
28°
19°
1
30°
23°
2
38°
19°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Defiance
Defiance's December 2026 forecast shows daily high temperatures ranging from 28° to 50°, with overnight lows between 13° and 36°. The average high for December is 38° with an average low of 23°. 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 Defiance. See also: January | February | March.
