S
M
T
W
T
F
S
29
34°
22°
30
31°
22°
1
33°
29°
2
42°
30°
3
42°
28°
4
38°
28°
5
37°
27°
6
36°
27°
7
35°
26°
8
41°
27°
9
43°
27°
10
43°
26°
11
42°
26°
12
42°
25°
13
43°
27°
14
37°
26°
15
36°
20°
16
38°
16°
17
35°
22°
18
34°
24°
19
36°
27°
20
39°
22°
21
39°
21°
22
34°
26°
23
36°
18°
24
38°
24°
25
34°
18°
26
40°
7°
27
37°
4°
28
25°
15°
29
28°
11°
30
32°
13°
31
28°
26°
1
40°
28°
2
40°
16°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Simms
Simms's December 2026 forecast shows daily high temperatures ranging from 25° to 43°, with overnight lows between 4° and 30°. The average high for December is 37° with an average low of 22°. 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 Simms. See also: January | February | March.