S
M
T
W
T
F
S
30
62°
56°
31
58°
52°
1
63°
50°
2
66°
48°
3
69°
46°
4
68°
48°
5
62°
49°
6
64°
53°
7
61°
56°
8
60°
55°
9
61°
50°
10
65°
53°
11
67°
54°
12
66°
56°
13
62°
52°
14
60°
54°
15
61°
52°
16
60°
53°
17
61°
53°
18
59°
52°
19
60°
47°
20
54°
46°
21
56°
49°
22
54°
48°
23
53°
46°
24
53°
49°
25
54°
48°
26
53°
46°
27
52°
44°
28
52°
45°
29
53°
46°
30
52°
49°
1
54°
49°
2
55°
44°
3
52°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Sitka
Sitka's September 2026 forecast shows daily high temperatures ranging from 52° to 67°, with overnight lows between 42° and 56°. The average high for September is 58° with an average low of 50°. 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 Sitka. See also: October | November | December.
