S
M
T
W
T
F
S
30
55°
48°
31
58°
43°
1
55°
44°
2
54°
45°
3
61°
53°
4
59°
51°
5
57°
50°
6
57°
50°
7
56°
48°
8
63°
44°
9
57°
44°
10
56°
47°
11
57°
48°
12
58°
43°
13
57°
46°
14
54°
47°
15
53°
43°
16
55°
44°
17
54°
43°
18
53°
44°
19
55°
42°
20
48°
40°
21
53°
43°
22
52°
39°
23
53°
41°
24
53°
38°
25
48°
34°
26
48°
39°
27
49°
36°
28
46°
32°
29
44°
33°
30
45°
34°
1
42°
31°
2
41°
30°
3
41°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Dillingham
Dillingham's September 2026 forecast shows daily high temperatures ranging from 41° to 63°, with overnight lows between 30° and 48°. The average high for September is 52° with an average low of 40°. 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 Dillingham. See also: October | November | December.