S
M
T
W
T
F
S
29
43°
33°
30
46°
35°
1
48°
34°
2
46°
34°
3
48°
32°
4
45°
31°
5
46°
31°
6
43°
32°
7
46°
31°
8
40°
28°
9
36°
28°
10
37°
26°
11
36°
29°
12
36°
26°
13
37°
25°
14
37°
19°
15
32°
19°
16
31°
22°
17
33°
21°
18
32°
27°
19
39°
26°
20
41°
22°
21
35°
20°
22
32°
19°
23
30°
17°
24
32°
23°
25
34°
18°
26
40°
12°
27
31°
13°
28
25°
14°
29
29°
13°
30
28°
17°
31
30°
24°
1
42°
18°
2
39°
13°
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 25° to 48°, with overnight lows between 12° and 35°. The average high for December is 37° with an average low of 24°. 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.
