S
M
T
W
T
F
S
30
77°
69°
31
78°
69°
1
78°
68°
2
77°
69°
3
78°
70°
4
76°
68°
5
78°
65°
6
77°
59°
7
71°
60°
8
70°
61°
9
71°
63°
10
74°
66°
11
77°
64°
12
77°
65°
13
76°
68°
14
77°
67°
15
77°
62°
16
75°
63°
17
76°
65°
18
75°
66°
19
77°
64°
20
76°
61°
21
74°
65°
22
70°
65°
23
69°
61°
24
71°
66°
25
71°
63°
26
73°
60°
27
71°
60°
28
70°
63°
29
71°
58°
30
69°
63°
1
70°
67°
2
77°
65°
3
71°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lido Isle
Lido Isle's September 2026 forecast shows daily high temperatures ranging from 69° to 78°, with overnight lows between 58° and 70°. The average high for September is 74° with an average low of 64°. 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 Lido Isle. See also: October | November | December.