S
M
T
W
T
F
S
27
83°
75°
28
85°
72°
29
88°
67°
30
80°
71°
1
82°
73°
2
84°
70°
3
89°
70°
4
88°
71°
5
87°
69°
6
87°
70°
7
87°
72°
8
86°
70°
9
87°
69°
10
86°
70°
11
87°
69°
12
87°
69°
13
86°
68°
14
87°
68°
15
87°
70°
16
86°
69°
17
84°
71°
18
82°
71°
19
82°
71°
20
82°
71°
21
83°
70°
22
82°
71°
23
82°
71°
24
83°
70°
25
82°
71°
26
82°
71°
27
83°
70°
28
82°
71°
29
82°
71°
30
83°
70°
31
81°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Waipahu
Waipahu's October 2026 forecast shows daily high temperatures ranging from 81° to 89°, with overnight lows between 68° and 72°. The average high for October is 85° with an average low of 70°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Waipahu. See also: November | December | January.