S
M
T
W
T
F
S
30
74°
57°
31
75°
58°
1
74°
57°
2
75°
57°
3
75°
56°
4
74°
57°
5
75°
57°
6
74°
56°
7
75°
57°
8
74°
57°
9
75°
53°
10
75°
57°
11
74°
57°
12
75°
56°
13
74°
56°
14
73°
55°
15
73°
57°
16
74°
57°
17
73°
56°
18
74°
57°
19
73°
56°
20
74°
57°
21
73°
55°
22
74°
56°
23
74°
56°
24
74°
56°
25
Hist. Avg.
70°
60°
26
Hist. Avg.
70°
60°
27
Hist. Avg.
70°
60°
28
Hist. Avg.
70°
60°
29
Hist. Avg.
70°
60°
30
Hist. Avg.
70°
60°
1
Hist. Avg.
70°
60°
2
Hist. Avg.
70°
60°
3
Hist. Avg.
70°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Ka'u CCD
Ka'u CCD's September 2026 forecast shows daily high temperatures ranging from 73° to 75°, with overnight lows between 53° and 58°. The average high for September is 74° with an average low of 56°. 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 Ka'u CCD. See also: October | November | December.