S
M
T
W
T
F
S
30
42°
34°
1
38°
32°
2
41°
34°
3
42°
40°
4
41°
38°
5
39°
36°
6
46°
36°
7
53°
44°
8
54°
50°
9
52°
46°
10
50°
44°
11
47°
40°
12
46°
39°
13
44°
38°
14
41°
35°
15
43°
35°
16
53°
42°
17
46°
41°
18
49°
44°
19
49°
35°
20
48°
35°
21
54°
42°
22
49°
32°
23
35°
32°
24
35°
22°
25
32°
22°
26
44°
28°
27
51°
27°
28
42°
26°
29
36°
24°
30
35°
27°
31
32°
26°
1
33°
29°
2
33°
27°
3
28°
26°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Spa
Spa's December 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for December is ° with an average low of °. 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 Spa. See also: January | February | March.
