S
M
T
W
T
F
S
30
74°
44°
31
73°
47°
1
74°
46°
2
71°
46°
3
64°
49°
4
68°
59°
5
66°
52°
6
55°
47°
7
70°
51°
8
68°
40°
9
63°
52°
10
72°
53°
11
69°
44°
12
68°
47°
13
69°
50°
14
68°
51°
15
68°
47°
16
69°
44°
17
67°
46°
18
66°
47°
19
67°
41°
20
66°
49°
21
59°
49°
22
60°
49°
23
62°
48°
24
65°
48°
25
62°
49°
26
63°
46°
27
56°
44°
28
61°
47°
29
64°
47°
30
64°
46°
1
63°
47°
2
63°
47°
3
62°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Rothesay
Rothesay's September 2026 forecast shows daily high temperatures ranging from 55° to 72°, with overnight lows between 40° and 53°. The average high for September is 65° with an average low of 47°. 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 Rothesay. See also: October | November | December.
