S
M
T
W
T
F
S
29
60°
43°
30
64°
41°
1
68°
35°
2
61°
29°
3
57°
28°
4
56°
29°
5
57°
36°
6
59°
41°
7
60°
39°
8
64°
32°
9
55°
32°
10
68°
39°
11
69°
33°
12
Hist. Avg.
62°
35°
13
Hist. Avg.
62°
35°
14
Hist. Avg.
62°
35°
15
Hist. Avg.
62°
35°
16
Hist. Avg.
62°
35°
17
Hist. Avg.
62°
34°
18
Hist. Avg.
62°
34°
19
Hist. Avg.
61°
34°
20
Hist. Avg.
61°
34°
21
Hist. Avg.
61°
34°
22
Hist. Avg.
61°
34°
23
Hist. Avg.
61°
34°
24
Hist. Avg.
61°
34°
25
Hist. Avg.
61°
34°
26
Hist. Avg.
61°
34°
27
Hist. Avg.
60°
34°
28
Hist. Avg.
60°
34°
29
Hist. Avg.
60°
33°
30
Hist. Avg.
60°
33°
31
Hist. Avg.
60°
33°
1
Hist. Avg.
60°
33°
2
Hist. Avg.
60°
33°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Mertzon
Mertzon's December 2026 forecast shows daily high temperatures ranging from 55° to 69°, with overnight lows between 28° and 43°. The average high for December is 61° 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 Mertzon. See also: January | February | March.
