S
M
T
W
T
F
S
29
50°
39°
30
58°
39°
1
56°
40°
2
57°
35°
3
45°
32°
4
52°
32°
5
56°
38°
6
54°
34°
7
44°
30°
8
43°
25°
9
43°
25°
10
42°
24°
11
41°
24°
12
41°
25°
13
42°
22°
14
43°
23°
15
43°
29°
16
45°
32°
17
44°
33°
18
49°
27°
19
48°
22°
20
43°
21°
21
40°
21°
22
40°
23°
23
43°
25°
24
41°
22°
25
41°
21°
26
39°
20°
27
40°
21°
28
39°
20°
29
40°
23°
30
42°
25°
31
46°
21°
1
44°
18°
2
39°
16°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Spencer
Spencer's December 2026 forecast shows daily high temperatures ranging from 39° to 58°, with overnight lows between 16° and 40°. The average high for December is 45° with an average low of 26°. 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 Spencer. See also: January | February | March.
