S
M
T
W
T
F
S
29
48°
33°
30
47°
27°
1
47°
37°
2
51°
25°
3
50°
23°
4
48°
24°
5
44°
25°
6
45°
24°
7
46°
25°
8
45°
23°
9
45°
23°
10
43°
21°
11
42°
22°
12
41°
22°
13
43°
24°
14
44°
24°
15
45°
25°
16
46°
28°
17
46°
29°
18
44°
29°
19
44°
28°
20
45°
25°
21
44°
29°
22
47°
31°
23
43°
25°
24
44°
24°
25
41°
23°
26
42°
22°
27
43°
23°
28
42°
22°
29
45°
24°
30
47°
17°
31
43°
16°
1
Hist. Avg.
50°
30°
2
Hist. Avg.
50°
30°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Simpson
Simpson's December 2026 forecast shows daily high temperatures ranging from 41° to 51°, with overnight lows between 16° and 37°. The average high for December is 45° 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 Simpson. See also: January | February | March.
