S
M
T
W
T
F
S
29
46°
33°
30
47°
33°
1
46°
30°
2
44°
31°
3
42°
30°
4
45°
30°
5
44°
29°
6
38°
26°
7
34°
21°
8
30°
19°
9
30°
21°
10
36°
25°
11
38°
28°
12
41°
26°
13
36°
26°
14
31°
21°
15
35°
21°
16
36°
25°
17
37°
24°
18
33°
18°
19
34°
16°
20
28°
11°
21
28°
12°
22
26°
17°
23
34°
21°
24
32°
20°
25
32°
9°
26
31°
8°
27
26°
6°
28
25°
7°
29
25°
13°
30
26°
17°
31
25°
10°
1
32°
6°
2
24°
5°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Triumph
Triumph's December 2026 forecast shows daily high temperatures ranging from 24° to 47°, with overnight lows between 5° and 33°. The average high for December is 34° with an average low of 20°. 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 Triumph. See also: January | February | March.
