S
M
T
W
T
F
S
30
86°
71°
31
86°
71°
1
85°
70°
2
86°
70°
3
85°
72°
4
86°
72°
5
86°
71°
6
85°
70°
7
86°
71°
8
85°
70°
9
84°
70°
10
85°
71°
11
85°
71°
12
85°
71°
13
85°
71°
14
85°
72°
15
Hist. Avg.
85°
75°
16
Hist. Avg.
85°
75°
17
Hist. Avg.
85°
75°
18
Hist. Avg.
85°
75°
19
Hist. Avg.
85°
75°
20
Hist. Avg.
85°
75°
21
Hist. Avg.
85°
75°
22
Hist. Avg.
85°
75°
23
Hist. Avg.
85°
75°
24
Hist. Avg.
85°
75°
25
Hist. Avg.
85°
75°
26
Hist. Avg.
85°
75°
27
Hist. Avg.
85°
75°
28
Hist. Avg.
85°
75°
29
Hist. Avg.
85°
75°
30
Hist. Avg.
85°
75°
1
Hist. Avg.
85°
75°
2
Hist. Avg.
85°
74°
3
Hist. Avg.
85°
74°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Kalaheo
Kalaheo's September 2026 forecast shows daily high temperatures ranging from 84° to 86°, with overnight lows between 70° and 72°. The average high for September is 85° with an average low of 71°. 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 Kalaheo. See also: October | November | December.