S
M
T
W
T
F
S
30
74°
64°
31
73°
65°
1
85°
69°
2
87°
68°
3
83°
68°
4
79°
63°
5
76°
58°
6
74°
52°
7
74°
51°
8
79°
61°
9
83°
67°
10
77°
52°
11
73°
50°
12
79°
59°
13
78°
57°
14
72°
55°
15
74°
54°
16
71°
51°
17
72°
52°
18
71°
54°
19
69°
50°
20
66°
48°
21
67°
53°
22
65°
52°
23
67°
52°
24
68°
51°
25
73°
52°
26
72°
49°
27
65°
47°
28
71°
51°
29
72°
52°
30
73°
52°
1
73°
51°
2
71°
49°
3
70°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Naples
Naples's September 2026 forecast shows daily high temperatures ranging from 65° to 83°, with overnight lows between 47° and 67°. The average high for September is 72° with an average low of 53°. 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 Naples. See also: October | November | December.
