S
M
T
W
T
F
S
30
62°
52°
31
58°
52°
1
58°
47°
2
65°
44°
3
69°
44°
4
69°
44°
5
67°
42°
6
63°
48°
7
63°
49°
8
56°
55°
9
62°
46°
10
59°
42°
11
65°
44°
12
61°
44°
13
60°
46°
14
60°
46°
15
60°
48°
16
59°
50°
17
59°
50°
18
59°
49°
19
58°
48°
20
57°
50°
21
57°
47°
22
58°
47°
23
54°
48°
24
55°
46°
25
49°
39°
26
50°
40°
27
49°
40°
28
49°
41°
29
50°
41°
30
49°
42°
1
48°
40°
2
48°
39°
3
47°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Rowan Bay
Rowan Bay's September 2026 forecast shows daily high temperatures ranging from 47° to 61°, with overnight lows between 38° and 50°. The average high for September is 54° with an average low of 45°. 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 Rowan Bay. See also: October | November | December.