S
M
T
W
T
F
S
29
46°
23°
30
42°
22°
1
43°
19°
2
44°
21°
3
45°
21°
4
42°
20°
5
45°
21°
6
49°
20°
7
45°
20°
8
48°
21°
9
49°
19°
10
42°
18°
11
42°
7°
12
39°
7°
13
39°
9°
14
42°
8°
15
40°
15°
16
48°
17°
17
48°
16°
18
44°
17°
19
42°
19°
20
42°
15°
21
46°
17°
22
45°
9°
23
42°
6°
24
36°
6°
25
36°
10°
26
44°
18°
27
49°
14°
28
46°
17°
29
45°
22°
30
47°
18°
31
46°
10°
1
42°
6°
2
38°
8°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Gallup
Gallup's December 2026 forecast shows daily high temperatures ranging from 36° to 49°, with overnight lows between 6° and 23°. The average high for December is 44° with an average low of 15°. 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 Gallup. See also: January | February | March.
