S
M
T
W
T
F
S
30
64°
57°
31
63°
55°
1
64°
55°
2
64°
57°
3
63°
57°
4
63°
55°
5
63°
54°
6
68°
55°
7
61°
57°
8
61°
54°
9
62°
53°
10
62°
54°
11
63°
55°
12
64°
52°
13
62°
54°
14
63°
58°
15
62°
54°
16
60°
50°
17
61°
51°
18
63°
53°
19
64°
52°
20
63°
53°
21
62°
54°
22
62°
53°
23
62°
52°
24
61°
51°
25
57°
50°
26
57°
49°
27
58°
50°
28
57°
46°
29
56°
46°
30
56°
51°
1
58°
50°
2
57°
50°
3
57°
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 56° to 64°, with overnight lows between 46° and 58°. The average high for September is 60° with an average low of 52°. 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.
