S
M
T
W
T
F
S
30
71°
50°
31
75°
56°
1
72°
58°
2
66°
51°
3
66°
49°
4
68°
51°
5
70°
52°
6
74°
52°
7
71°
53°
8
70°
54°
9
71°
53°
10
71°
51°
11
71°
52°
12
71°
54°
13
70°
50°
14
69°
52°
15
70°
52°
16
65°
53°
17
64°
53°
18
64°
49°
19
65°
53°
20
63°
49°
21
63°
47°
22
64°
47°
23
61°
46°
24
61°
46°
25
62°
47°
26
66°
46°
27
67°
54°
28
61°
52°
29
62°
47°
30
68°
52°
1
63°
53°
2
60°
51°
3
61°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Gig Harbor
Gig Harbor's September 2026 forecast shows daily high temperatures ranging from 60° to 74°, with overnight lows between 46° and 58°. The average high for September is 66° with an average low of 51°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Gig Harbor. See also: October | November | December.
