S
M
T
W
T
F
S
26
87°
66°
27
89°
68°
28
89°
68°
29
88°
67°
30
88°
67°
31
85°
66°
1
83°
66°
2
82°
63°
3
82°
65°
4
83°
66°
5
83°
64°
6
82°
65°
7
83°
65°
8
84°
66°
9
82°
66°
10
81°
65°
11
81°
65°
12
82°
64°
13
81°
65°
14
81°
64°
15
82°
65°
16
81°
62°
17
81°
64°
18
82°
62°
19
80°
60°
20
83°
64°
21
83°
60°
22
80°
56°
23
79°
57°
24
81°
58°
25
80°
61°
26
84°
62°
27
87°
64°
28
88°
64°
29
87°
63°
30
87°
57°
31
80°
56°
1
79°
62°
2
79°
61°
3
82°
57°
4
83°
63°
5
85°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Blue Mountain
Blue Mountain's August 2026 forecast shows daily high temperatures ranging from 79° to 89°, with overnight lows between 56° and 68°. The average high for August is 83° 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 August weather will actually feel in Blue Mountain. See also: September | October | November.