S
M
T
W
T
F
S
29
27°
16°
30
27°
12°
1
31°
13°
2
38°
21°
3
37°
20°
4
36°
20°
5
36°
20°
6
35°
14°
7
33°
13°
8
30°
13°
9
27°
18°
10
33°
13°
11
31°
12°
12
32°
11°
13
35°
14°
14
34°
17°
15
34°
17°
16
33°
18°
17
Hist. Avg.
25°
2°
18
Hist. Avg.
25°
2°
19
Hist. Avg.
25°
2°
20
Hist. Avg.
25°
1°
21
Hist. Avg.
25°
1°
22
Hist. Avg.
25°
1°
23
Hist. Avg.
25°
1°
24
Hist. Avg.
25°
1°
25
Hist. Avg.
25°
0°
26
Hist. Avg.
25°
0°
27
Hist. Avg.
25°
0°
28
Hist. Avg.
25°
0°
29
Hist. Avg.
25°
0°
30
Hist. Avg.
25°
0°
31
Hist. Avg.
25°
0°
1
Hist. Avg.
25°
0°
2
Hist. Avg.
25°
0°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Gardiner
Gardiner's December 2026 forecast shows daily high temperatures ranging from 27° to 38°, with overnight lows between 11° and 21°. The average high for December is 33° with an average low of 16°. 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 Gardiner. See also: January | February | March.