S
M
T
W
T
F
S
29
59°
30°
30
52°
27°
1
55°
32°
2
60°
31°
3
59°
30°
4
46°
30°
5
46°
29°
6
49°
30°
7
50°
29°
8
51°
29°
9
49°
26°
10
44°
22°
11
44°
24°
12
51°
28°
13
52°
27°
14
55°
28°
15
54°
28°
16
55°
29°
17
55°
27°
18
54°
28°
19
52°
26°
20
47°
27°
21
54°
28°
22
55°
27°
23
51°
24°
24
53°
27°
25
42°
20°
26
43°
19°
27
44°
15°
28
45°
16°
29
43°
19°
30
44°
20°
31
47°
19°
1
47°
21°
2
53°
15°
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 42° to 60°, with overnight lows between 15° and 32°. The average high for December is 50° with an average low of 25°. 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.