S
M
T
W
T
F
S
26
108°
79°
27
108°
77°
28
103°
83°
29
99°
69°
30
104°
77°
1
98°
73°
2
101°
79°
3
98°
76°
4
90°
66°
5
91°
67°
6
96°
69°
7
92°
69°
8
98°
73°
9
98°
75°
10
100°
79°
11
100°
81°
12
102°
82°
13
103°
77°
14
105°
74°
15
104°
79°
16
105°
77°
17
107°
79°
18
93°
70°
19
95°
70°
20
97°
70°
21
96°
70°
22
96°
69°
23
93°
68°
24
105°
75°
25
103°
74°
26
103°
74°
27
104°
75°
28
103°
77°
29
103°
77°
30
104°
78°
31
89°
63°
1
88°
64°
2
90°
64°
3
92°
65°
4
93°
65°
5
92°
66°
6
89°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Mauna
Mauna's May 2026 forecast shows daily high temperatures ranging from 88° to 105°, with overnight lows between 63° and 78°. The average high for May is 96° 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 May weather will actually feel in Mauna. See also: June | July | August.