S
M
T
W
T
F
S
30
62°
47°
31
58°
51°
1
59°
50°
2
62°
51°
3
60°
50°
4
59°
51°
5
61°
53°
6
62°
50°
7
58°
45°
8
59°
41°
9
55°
40°
10
54°
40°
11
54°
39°
12
55°
39°
13
54°
40°
14
56°
45°
15
53°
42°
16
52°
42°
17
52°
43°
18
53°
41°
19
52°
39°
20
53°
38°
21
52°
44°
22
53°
43°
23
55°
45°
24
55°
44°
25
54°
42°
26
52°
42°
27
51°
40°
28
52°
37°
29
51°
35°
30
51°
37°
1
47°
35°
2
49°
43°
3
54°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Anchorage
Anchorage's September 2026 forecast shows daily high temperatures ranging from 47° to 62°, with overnight lows between 35° and 53°. The average high for September is 55° with an average low of 43°. 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 Anchorage. See also: October | November | December.