S
M
T
W
T
F
S
30
60°
49°
31
60°
46°
1
59°
45°
2
58°
45°
3
55°
47°
4
56°
48°
5
58°
48°
6
58°
47°
7
57°
48°
8
58°
48°
9
57°
47°
10
57°
48°
11
56°
47°
12
56°
47°
13
57°
46°
14
56°
46°
15
55°
45°
16
55°
46°
17
54°
46°
18
55°
45°
19
55°
46°
20
54°
46°
21
54°
45°
22
53°
45°
23
54°
39°
24
54°
44°
25
53°
43°
26
53°
41°
27
52°
41°
28
49°
43°
29
53°
43°
30
51°
42°
1
52°
44°
2
53°
44°
3
52°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Dutch Harbor
Dutch Harbor's September 2026 forecast shows daily high temperatures ranging from 49° to 60°, with overnight lows between 39° and 49°. The average high for September is 55° with an average low of 45°. 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 Dutch Harbor. See also: October | November | December.
