S
M
T
W
T
F
S
26
76°
56°
27
81°
55°
28
77°
56°
29
81°
55°
30
77°
52°
31
73°
50°
1
74°
54°
2
78°
55°
3
80°
56°
4
82°
55°
5
79°
54°
6
78°
55°
7
81°
54°
8
81°
54°
9
80°
46°
10
74°
47°
11
72°
48°
12
73°
49°
13
71°
46°
14
72°
46°
15
77°
53°
16
76°
53°
17
75°
48°
18
73°
45°
19
77°
47°
20
79°
50°
21
79°
53°
22
78°
53°
23
77°
49°
24
79°
48°
25
78°
43°
26
70°
47°
27
71°
51°
28
72°
51°
29
73°
50°
30
74°
51°
31
76°
47°
1
74°
46°
2
72°
42°
3
70°
42°
4
73°
45°
5
74°
49°
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 70° to 82°, with overnight lows between 42° and 56°. The average high for August is 76° with an average low of 50°. 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.