S
M
T
W
T
F
S
29
47°
32°
30
48°
31°
1
47°
30°
2
51°
36°
3
51°
32°
4
49°
29°
5
44°
26°
6
43°
31°
7
43°
35°
8
45°
32°
9
44°
28°
10
43°
30°
11
42°
29°
12
42°
27°
13
43°
26°
14
42°
26°
15
42°
32°
16
43°
37°
17
47°
36°
18
48°
29°
19
48°
26°
20
42°
25°
21
41°
27°
22
42°
26°
23
44°
32°
24
45°
34°
25
43°
33°
26
44°
30°
27
46°
26°
28
43°
28°
29
46°
29°
30
50°
32°
31
51°
31°
1
50°
28°
2
51°
31°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Trail
Trail's December 2026 forecast shows daily high temperatures ranging from 41° to 51°, with overnight lows between 25° and 37°. The average high for December is 45° with an average low of 30°. 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 Trail. See also: January | February | March.
