S
M
T
W
T
F
S
29
41°
30°
30
37°
30°
31
36°
31°
1
44°
35°
2
43°
34°
3
42°
37°
4
48°
34°
5
44°
32°
6
44°
39°
7
41°
37°
8
44°
38°
9
46°
36°
10
47°
38°
11
47°
40°
12
47°
38°
13
47°
39°
14
47°
37°
15
50°
39°
16
50°
41°
17
46°
41°
18
50°
37°
19
49°
39°
20
51°
35°
21
50°
34°
22
51°
33°
23
50°
34°
24
49°
34°
25
50°
33°
26
48°
34°
27
48°
34°
28
50°
33°
29
47°
35°
30
48°
36°
1
47°
36°
2
47°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Mauna Loa Observatory
Mauna Loa Observatory's April 2026 forecast shows daily high temperatures ranging from 46° to 51°, with overnight lows between 33° and 41°. The average high for April is 49° with an average low of 36°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Mauna Loa Observatory. See also: May | June | July.
