S
M
T
W
T
F
S
29
65°
48°
30
69°
48°
1
68°
49°
2
68°
48°
3
64°
41°
4
55°
38°
5
60°
44°
6
61°
45°
7
64°
41°
8
56°
40°
9
54°
39°
10
53°
36°
11
53°
32°
12
54°
32°
13
55°
33°
14
56°
34°
15
54°
44°
16
60°
42°
17
68°
43°
18
63°
44°
19
62°
35°
20
63°
27°
21
58°
29°
22
50°
35°
23
53°
36°
24
65°
30°
25
65°
29°
26
51°
32°
27
52°
30°
28
52°
32°
29
53°
40°
30
56°
40°
31
66°
30°
1
65°
27°
2
52°
25°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Santee
Santee's December 2026 forecast shows daily high temperatures ranging from 50° to 69°, with overnight lows between 25° and 49°. The average high for December is 59° with an average low of 37°. 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 Santee. See also: January | February | March.
