S
M
T
W
T
F
S
27
83°
75°
28
85°
72°
29
88°
67°
30
80°
71°
1
82°
73°
2
84°
71°
3
83°
68°
4
81°
70°
5
83°
69°
6
87°
68°
7
86°
74°
8
84°
73°
9
87°
72°
10
89°
70°
11
87°
69°
12
86°
70°
13
87°
69°
14
85°
70°
15
86°
68°
16
87°
69°
17
85°
68°
18
86°
70°
19
85°
69°
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 74°. The average high for October is 84° 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.