S
M
T
W
T
F
S
29
46°
38°
30
50°
39°
1
52°
40°
2
51°
38°
3
53°
38°
4
45°
35°
5
49°
34°
6
49°
36°
7
48°
34°
8
42°
31°
9
40°
27°
10
38°
27°
11
37°
33°
12
39°
32°
13
41°
31°
14
36°
24°
15
38°
26°
16
38°
31°
17
41°
32°
18
39°
33°
19
46°
29°
20
43°
19°
21
37°
20°
22
33°
22°
23
31°
27°
24
35°
26°
25
46°
26°
26
42°
20°
27
36°
18°
28
33°
19°
29
33°
19°
30
35°
31°
31
45°
26°
1
49°
19°
2
39°
18°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Gap
Gap's December 2026 forecast shows daily high temperatures ranging from 31° to 53°, with overnight lows between 18° and 40°. The average high for December is 42° with an average low of 29°. 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 Gap. See also: January | February | March.
