S
M
T
W
T
F
S
27
79°
69°
28
82°
67°
29
82°
68°
30
84°
70°
1
83°
69°
2
84°
70°
3
83°
69°
4
84°
70°
5
84°
70°
6
83°
69°
7
84°
70°
8
84°
69°
9
83°
67°
10
82°
67°
11
80°
68°
12
80°
67°
13
81°
67°
14
80°
68°
15
81°
69°
16
82°
69°
17
83°
70°
18
84°
69°
19
84°
69°
20
83°
68°
21
82°
69°
22
83°
70°
23
84°
69°
24
83°
69°
25
83°
68°
26
82°
69°
27
83°
69°
28
82°
68°
29
82°
69°
30
83°
69°
31
82°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Mauna Kea
Mauna Kea's October 2026 forecast shows daily high temperatures ranging from 79° to 84°, with overnight lows between 65° and 70°. The average high for October is 83° 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 October weather will actually feel in Mauna Kea. See also: November | December | January.