S
M
T
W
T
F
S
29
53°
37°
30
58°
36°
1
54°
38°
2
56°
35°
3
45°
32°
4
50°
28°
5
56°
35°
6
56°
33°
7
43°
28°
8
42°
23°
9
42°
22°
10
41°
21°
11
39°
22°
12
40°
22°
13
41°
21°
14
41°
20°
15
40°
26°
16
42°
28°
17
43°
31°
18
48°
28°
19
47°
19°
20
43°
18°
21
39°
18°
22
37°
19°
23
40°
24°
24
40°
20°
25
41°
18°
26
38°
16°
27
37°
18°
28
36°
16°
29
38°
20°
30
39°
24°
31
46°
19°
1
47°
16°
2
37°
13°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Slemp
Slemp's December 2026 forecast shows daily high temperatures ranging from 36° to 58°, with overnight lows between 13° and 38°. The average high for December is 44° 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 Slemp. See also: January | February | March.