S
M
T
W
T
F
S
29
44°
33°
30
42°
32°
1
41°
32°
2
39°
33°
3
39°
34°
4
40°
35°
5
43°
35°
6
42°
30°
7
42°
26°
8
39°
28°
9
39°
33°
10
41°
32°
11
41°
34°
12
36°
23°
13
39°
18°
14
41°
29°
15
43°
28°
16
Hist. Avg.
35°
23°
17
Hist. Avg.
35°
23°
18
Hist. Avg.
35°
23°
19
Hist. Avg.
35°
23°
20
Hist. Avg.
35°
23°
21
Hist. Avg.
35°
23°
22
Hist. Avg.
35°
23°
23
Hist. Avg.
35°
23°
24
Hist. Avg.
35°
23°
25
Hist. Avg.
35°
23°
26
Hist. Avg.
35°
23°
27
Hist. Avg.
35°
23°
28
Hist. Avg.
35°
23°
29
Hist. Avg.
35°
23°
30
Hist. Avg.
35°
24°
31
Hist. Avg.
35°
24°
1
Hist. Avg.
35°
24°
2
Hist. Avg.
35°
24°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Spokane
Spokane's December 2026 forecast shows daily high temperatures ranging from 36° to 44°, with overnight lows between 18° and 35°. The average high for December is 41° with an average low of 30°. 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.