S
M
T
W
T
F
S
27
56°
39°
28
55°
39°
29
56°
38°
30
56°
39°
1
55°
40°
2
56°
40°
3
56°
39°
4
55°
39°
5
56°
38°
6
55°
39°
7
56°
38°
8
56°
39°
9
55°
38°
10
55°
39°
11
54°
40°
12
56°
40°
13
56°
39°
14
55°
39°
15
56°
38°
16
56°
39°
17
55°
35°
18
55°
39°
19
54°
39°
20
55°
38°
21
54°
39°
22
55°
36°
23
55°
36°
24
53°
38°
25
51°
37°
26
52°
36°
27
53°
37°
28
52°
38°
29
54°
38°
30
55°
38°
31
53°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Mauna Loa Observatory
Mauna Loa Observatory's October 2026 forecast shows daily high temperatures ranging from 51° to 56°, with overnight lows between 35° and 40°. The average high for October is 55° with an average low of 38°. 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 Loa Observatory. See also: November | December | January.
