S
M
T
W
T
F
S
26
81°
58°
27
86°
63°
28
72°
57°
29
70°
52°
30
65°
44°
1
67°
45°
2
68°
43°
3
78°
39°
4
81°
58°
5
66°
46°
6
61°
45°
7
68°
40°
8
77°
46°
9
83°
53°
10
73°
54°
11
76°
48°
12
79°
48°
13
79°
57°
14
78°
48°
15
80°
56°
16
86°
67°
17
86°
70°
18
82°
70°
19
80°
60°
20
66°
55°
21
71°
56°
22
75°
57°
23
79°
61°
24
78°
64°
25
81°
63°
26
84°
66°
27
83°
65°
28
81°
64°
29
80°
60°
30
81°
64°
31
84°
65°
1
84°
65°
2
83°
64°
3
81°
63°
4
77°
58°
5
80°
63°
6
83°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Mountain Home
Mountain Home's May 2026 forecast shows daily high temperatures ranging from 66° to 86°, with overnight lows between 55° and 70°. The average high for May is 80° with an average low of 63°. 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 Mountain Home. See also: June | July | August.