S
M
T
W
T
F
S
29
48°
41°
30
45°
35°
1
45°
35°
2
42°
36°
3
46°
35°
4
44°
36°
5
42°
36°
6
43°
36°
7
42°
37°
8
45°
36°
9
43°
37°
10
43°
37°
11
44°
36°
12
43°
33°
13
42°
30°
14
41°
32°
15
40°
33°
16
40°
30°
17
41°
32°
18
39°
33°
19
40°
33°
20
41°
34°
21
42°
35°
22
42°
36°
23
43°
34°
24
43°
36°
25
42°
36°
26
42°
35°
27
44°
36°
28
41°
37°
29
44°
35°
30
44°
35°
31
43°
36°
1
43°
36°
2
44°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Gig Harbor
Gig Harbor's December 2026 forecast shows daily high temperatures ranging from 39° to 48°, with overnight lows between 30° 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 Gig Harbor. See also: January | February | March.