S
M
T
W
T
F
S
29
46°
26°
30
54°
37°
1
48°
37°
2
47°
36°
3
49°
37°
4
49°
37°
5
51°
36°
6
54°
36°
7
52°
34°
8
49°
27°
9
44°
26°
10
46°
31°
11
57°
24°
12
58°
22°
13
57°
20°
14
42°
26°
15
47°
21°
16
44°
27°
17
49°
32°
18
51°
33°
19
56°
34°
20
56°
33°
21
55°
32°
22
55°
36°
23
58°
27°
24
58°
18°
25
55°
16°
26
38°
19°
27
42°
27°
28
45°
33°
29
54°
34°
30
55°
36°
31
57°
33°
1
58°
25°
2
59°
19°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Mammoth Spring
Mammoth Spring's December 2026 forecast shows daily high temperatures ranging from 38° to 59°, with overnight lows between 16° and 37°. The average high for December is 51° 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 Mammoth Spring. See also: January | February | March.
