S
M
T
W
T
F
S
29
55°
30°
30
46°
29°
1
45°
32°
2
45°
36°
3
47°
31°
4
48°
28°
5
45°
26°
6
44°
24°
7
43°
25°
8
39°
23°
9
40°
22°
10
39°
21°
11
37°
29°
12
45°
26°
13
46°
34°
14
47°
28°
15
Hist. Avg.
42°
23°
16
Hist. Avg.
42°
23°
17
Hist. Avg.
42°
23°
18
Hist. Avg.
41°
22°
19
Hist. Avg.
41°
22°
20
Hist. Avg.
41°
22°
21
Hist. Avg.
40°
22°
22
Hist. Avg.
40°
22°
23
Hist. Avg.
40°
21°
24
Hist. Avg.
40°
21°
25
Hist. Avg.
40°
21°
26
Hist. Avg.
39°
21°
27
Hist. Avg.
39°
21°
28
Hist. Avg.
39°
20°
29
Hist. Avg.
39°
20°
30
Hist. Avg.
38°
20°
31
Hist. Avg.
38°
20°
1
Hist. Avg.
38°
20°
2
Hist. Avg.
38°
20°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Gillette
Gillette's December 2026 forecast shows daily high temperatures ranging from 37° to 55°, with overnight lows between 21° and 36°. The average high for December is 44° with an average low of 28°. 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 Gillette. See also: January | February | March.
