S
M
T
W
T
F
S
29
40°
22°
30
38°
22°
1
39°
23°
2
40°
25°
3
43°
26°
4
46°
29°
5
49°
33°
6
44°
31°
7
42°
30°
8
38°
30°
9
38°
25°
10
37°
24°
11
52°
34°
12
51°
28°
13
53°
25°
14
47°
23°
15
37°
22°
16
38°
21°
17
36°
26°
18
39°
33°
19
44°
35°
20
50°
36°
21
51°
34°
22
50°
34°
23
49°
36°
24
53°
32°
25
54°
24°
26
53°
21°
27
35°
23°
28
38°
30°
29
47°
33°
30
47°
35°
31
49°
36°
1
50°
32°
2
51°
23°
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 35° to 54°, with overnight lows between 21° and 36°. The average high for December is 45° with an average low of 28°. 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.
