S
M
T
W
T
F
S
29
39°
23°
30
39°
21°
1
35°
21°
2
33°
15°
3
34°
17°
4
30°
24°
5
36°
23°
6
38°
24°
7
37°
22°
8
36°
21°
9
36°
19°
10
36°
20°
11
37°
19°
12
34°
18°
13
33°
8°
14
31°
14°
15
Hist. Avg.
25°
3°
16
Hist. Avg.
25°
2°
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 30° to 39°, with overnight lows between 8° and 24°. The average high for December is 35° with an average low of 19°. 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.