S
M
T
W
T
F
S
29
40°
35°
30
42°
32°
1
42°
31°
2
41°
30°
3
41°
33°
4
40°
33°
5
40°
31°
6
39°
31°
7
36°
30°
8
38°
30°
9
36°
31°
10
40°
29°
11
39°
28°
12
39°
30°
13
36°
30°
14
37°
29°
15
37°
28°
16
36°
29°
17
35°
25°
18
33°
17°
19
32°
16°
20
29°
16°
21
26°
19°
22
26°
21°
23
31°
16°
24
29°
15°
25
26°
14°
26
24°
13°
27
23°
14°
28
26°
18°
29
27°
17°
30
29°
20°
31
28°
19°
1
27°
15°
2
36°
29°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Sandpoint
Sandpoint's December 2026 forecast shows daily high temperatures ranging from 23° to 42°, with overnight lows between 13° and 35°. The average high for December is 34° 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 Sandpoint. See also: January | February | March.