S
M
T
W
T
F
S
26
88°
71°
27
89°
71°
28
89°
70°
29
90°
71°
30
91°
72°
31
92°
72°
1
91°
71°
2
92°
72°
3
93°
73°
4
92°
72°
5
94°
74°
6
94°
72°
7
93°
72°
8
93°
71°
9
92°
71°
10
91°
70°
11
92°
72°
12
92°
72°
13
91°
71°
14
93°
72°
15
92°
72°
16
92°
71°
17
91°
70°
18
92°
69°
19
92°
67°
20
90°
66°
21
92°
67°
22
91°
69°
23
92°
69°
24
88°
64°
25
86°
64°
26
86°
65°
27
85°
63°
28
85°
63°
29
86°
64°
30
85°
63°
31
86°
64°
1
89°
63°
2
89°
63°
3
90°
67°
4
90°
67°
5
88°
66°
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 85° to 94°, with overnight lows between 63° and 74°. The average high for August is 90° with an average low of 69°. 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.