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