S
M
T
W
T
F
S
30
83°
70°
31
82°
71°
1
84°
70°
2
82°
71°
3
83°
67°
4
81°
67°
5
82°
66°
6
83°
71°
7
84°
73°
8
82°
70°
9
84°
70°
10
80°
72°
11
80°
70°
12
80°
66°
13
81°
66°
14
82°
68°
15
82°
68°
16
84°
68°
17
83°
74°
18
84°
70°
19
82°
72°
20
82°
70°
21
83°
70°
22
84°
71°
23
83°
71°
24
82°
72°
25
80°
71°
26
82°
70°
27
81°
68°
28
82°
67°
29
83°
67°
30
82°
68°
1
84°
69°
2
83°
66°
3
80°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lana‘i City
Lana‘i City's September 2026 forecast shows daily high temperatures ranging from 80° to 84°, with overnight lows between 66° and 72°. The average high for September is 82° with an average low of 69°. 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 Lana‘i City. See also: October | November | December.
