S
M
T
W
T
F
S
30
60°
50°
31
59°
51°
1
55°
50°
2
57°
49°
3
58°
49°
4
59°
47°
5
59°
45°
6
60°
49°
7
59°
44°
8
56°
44°
9
55°
44°
10
59°
45°
11
58°
46°
12
57°
48°
13
54°
48°
14
54°
44°
15
55°
43°
16
52°
42°
17
52°
43°
18
53°
45°
19
53°
40°
20
51°
42°
21
51°
42°
22
52°
41°
23
51°
41°
24
50°
42°
25
50°
41°
26
51°
42°
27
50°
41°
28
50°
40°
29
51°
41°
30
50°
45°
1
51°
44°
2
49°
42°
3
Hist. Avg.
54°
44°
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 49° to 60°, with overnight lows between 40° and 51°. The average high for September is 54° with an average low of 44°. 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.