S
M
T
W
T
F
S
29
40°
21°
30
29°
19°
1
30°
21°
2
41°
23°
3
40°
22°
4
40°
21°
5
35°
20°
6
32°
17°
7
24°
16°
8
38°
21°
9
40°
21°
10
39°
20°
11
39°
20°
12
38°
19°
13
39°
21°
14
35°
17°
15
34°
16°
16
35°
10°
17
33°
8°
18
27°
1°
19
26°
2°
20
19°
17°
21
31°
13°
22
32°
9°
23
31°
12°
24
31°
11°
25
30°
16°
26
30°
14°
27
34°
0°
28
29°
0°
29
19°
5°
30
20°
-3°
31
19°
2°
1
16°
14°
2
27°
15°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Marmarth
Marmarth's December 2026 forecast shows daily high temperatures ranging from 16° to 41°, with overnight lows between -3° and 23°. The average high for December is 31° with an average low of 14°. 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 Marmarth. See also: January | February | March.
