S
M
T
W
T
F
S
29
41°
31°
30
41°
31°
1
42°
35°
2
43°
41°
3
47°
40°
4
46°
35°
5
47°
32°
6
44°
31°
7
43°
33°
8
42°
34°
9
43°
36°
10
41°
35°
11
Hist. Avg.
47°
37°
12
Hist. Avg.
47°
37°
13
Hist. Avg.
47°
37°
14
Hist. Avg.
47°
37°
15
Hist. Avg.
47°
37°
16
Hist. Avg.
47°
37°
17
Hist. Avg.
46°
37°
18
Hist. Avg.
46°
37°
19
Hist. Avg.
46°
37°
20
Hist. Avg.
46°
37°
21
Hist. Avg.
46°
37°
22
Hist. Avg.
46°
37°
23
Hist. Avg.
46°
37°
24
Hist. Avg.
46°
37°
25
Hist. Avg.
46°
37°
26
Hist. Avg.
46°
37°
27
Hist. Avg.
46°
37°
28
Hist. Avg.
46°
37°
29
Hist. Avg.
46°
37°
30
Hist. Avg.
47°
37°
31
Hist. Avg.
47°
37°
1
Hist. Avg.
47°
37°
2
Hist. Avg.
47°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Fall City
Fall City's December 2026 forecast shows daily high temperatures ranging from 41° to 47°, with overnight lows between 31° and 41°. The average high for December is 43° with an average low of 35°. 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 Fall City. See also: January | February | March.