S
M
T
W
T
F
S
30
72°
57°
31
72°
54°
1
70°
62°
2
67°
64°
3
69°
64°
4
68°
59°
5
66°
60°
6
68°
61°
7
67°
59°
8
64°
58°
9
65°
57°
10
64°
56°
11
66°
58°
12
66°
57°
13
67°
58°
14
65°
50°
15
66°
53°
16
63°
50°
17
63°
55°
18
64°
55°
19
66°
54°
20
63°
54°
21
65°
55°
22
65°
55°
23
66°
51°
24
62°
49°
25
63°
48°
26
63°
49°
27
64°
52°
28
64°
53°
29
64°
54°
30
65°
54°
1
65°
53°
2
64°
53°
3
65°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Fortuneswell
Fortuneswell's September 2026 forecast shows daily high temperatures ranging from 62° to 70°, with overnight lows between 48° and 64°. The average high for September is 65° with an average low of 55°. 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 Fortuneswell. See also: October | November | December.