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