S
M
T
W
T
F
S
30
61°
47°
31
62°
52°
1
63°
57°
2
66°
50°
3
58°
53°
4
68°
45°
5
56°
44°
6
56°
48°
7
58°
49°
8
55°
47°
9
57°
47°
10
59°
51°
11
58°
53°
12
60°
51°
13
59°
50°
14
58°
50°
15
57°
49°
16
58°
48°
17
55°
47°
18
54°
48°
19
55°
49°
20
49°
40°
21
51°
45°
22
50°
44°
23
51°
44°
24
50°
43°
25
50°
44°
26
49°
43°
27
49°
43°
28
48°
42°
29
48°
43°
30
49°
42°
1
48°
42°
2
48°
41°
3
49°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Cold Bay
Cold Bay's September 2026 forecast shows daily high temperatures ranging from 48° to 60°, with overnight lows between 40° and 53°. The average high for September is 53° with an average low of 46°. 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 Cold Bay. See also: October | November | December.