S
M
T
W
T
F
S
26
85°
67°
27
86°
67°
28
86°
66°
29
84°
66°
30
86°
67°
31
84°
67°
1
85°
66°
2
83°
67°
3
81°
66°
4
85°
66°
5
84°
65°
6
83°
66°
7
81°
66°
8
82°
65°
9
84°
66°
10
85°
66°
11
85°
65°
12
82°
64°
13
81°
65°
14
85°
60°
15
85°
64°
16
86°
63°
17
81°
64°
18
80°
65°
19
81°
64°
20
80°
62°
21
80°
59°
22
78°
58°
23
79°
59°
24
79°
59°
25
81°
60°
26
83°
62°
27
84°
61°
28
84°
63°
29
85°
64°
30
85°
63°
31
84°
63°
1
83°
61°
2
79°
59°
3
82°
63°
4
83°
59°
5
81°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Mountain Home
Mountain Home's August 2026 forecast shows daily high temperatures ranging from 78° to 86°, with overnight lows between 58° and 67°. The average high for August is 83° with an average low of 64°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Mountain Home. See also: September | October | November.