S
M
T
W
T
F
S
29
45°
33°
30
44°
33°
1
45°
34°
2
43°
36°
3
44°
34°
4
42°
30°
5
39°
36°
6
41°
36°
7
46°
32°
8
46°
34°
9
44°
39°
10
46°
38°
11
46°
37°
12
46°
36°
13
45°
37°
14
43°
38°
15
47°
38°
16
46°
34°
17
Hist. Avg.
41°
35°
18
Hist. Avg.
41°
35°
19
Hist. Avg.
41°
35°
20
Hist. Avg.
41°
35°
21
Hist. Avg.
40°
35°
22
Hist. Avg.
40°
35°
23
Hist. Avg.
40°
35°
24
Hist. Avg.
40°
34°
25
Hist. Avg.
40°
34°
26
Hist. Avg.
40°
34°
27
Hist. Avg.
40°
34°
28
Hist. Avg.
40°
34°
29
Hist. Avg.
40°
34°
30
Hist. Avg.
40°
34°
31
Hist. Avg.
40°
34°
1
Hist. Avg.
39°
34°
2
Hist. Avg.
39°
33°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Trier
Trier's December 2026 forecast shows daily high temperatures ranging from 39° to 47°, with overnight lows between 30° and 39°. The average high for December is 44° with an average low of 35°. 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 Trier. See also: January | February | March.