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