S
M
T
W
T
F
S
28
51°
44°
29
47°
43°
30
51°
43°
1
49°
44°
2
51°
38°
3
47°
39°
4
48°
42°
5
49°
42°
6
52°
41°
7
49°
41°
8
50°
42°
9
49°
43°
10
49°
44°
11
53°
42°
12
50°
42°
13
51°
37°
14
45°
36°
15
47°
39°
16
51°
41°
17
49°
43°
18
53°
43°
19
54°
46°
20
47°
40°
21
45°
41°
22
49°
41°
23
52°
47°
24
55°
46°
25
53°
46°
26
53°
46°
27
54°
45°
28
55°
46°
29
54°
43°
30
54°
44°
31
55°
46°
1
54°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Mauna Loa Observatory
Mauna Loa Observatory's July 2026 forecast shows daily high temperatures ranging from 54° to 55°, with overnight lows between 44° and 46°. The average high for July is 54° with an average low of 45°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Mauna Loa Observatory. See also: August | September | October.
