S
M
T
W
T
F
S
29
61°
41°
30
67°
38°
1
66°
34°
2
62°
39°
3
65°
30°
4
65°
30°
5
57°
34°
6
63°
39°
7
65°
39°
8
64°
40°
9
65°
40°
10
66°
36°
11
66°
36°
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 57° to 67°, with overnight lows between 30° and 41°. The average high for December is 64° with an average low of 37°. 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.
