S
M
T
W
T
F
S
30
50°
39°
31
46°
39°
1
43°
38°
2
46°
38°
3
42°
35°
4
50°
42°
5
52°
46°
6
51°
47°
7
53°
45°
8
51°
44°
9
51°
45°
10
52°
47°
11
53°
46°
12
50°
40°
13
48°
42°
14
48°
40°
15
47°
39°
16
47°
39°
17
46°
38°
18
45°
34°
19
47°
35°
20
46°
39°
21
47°
37°
22
46°
39°
23
40°
31°
24
44°
36°
25
39°
31°
26
39°
31°
27
40°
30°
28
38°
29°
29
37°
32°
30
37°
34°
1
42°
36°
2
43°
38°
3
44°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Kotzebue
Kotzebue's September 2026 forecast shows daily high temperatures ranging from 37° to 53°, with overnight lows between 29° and 47°. The average high for September is 44° with an average low of 37°. 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 Kotzebue. See also: October | November | December.