S
M
T
W
T
F
S
26
78°
63°
27
80°
63°
28
81°
65°
29
74°
60°
30
74°
56°
31
78°
53°
1
73°
57°
2
77°
64°
3
75°
62°
4
77°
63°
5
78°
64°
6
77°
62°
7
76°
62°
8
80°
62°
9
82°
61°
10
79°
63°
11
81°
62°
12
76°
62°
13
76°
62°
14
82°
67°
15
82°
66°
16
82°
64°
17
84°
66°
18
78°
65°
19
81°
64°
20
79°
64°
21
73°
60°
22
78°
62°
23
73°
58°
24
72°
55°
25
78°
50°
26
82°
60°
27
82°
61°
28
78°
60°
29
82°
62°
30
82°
63°
31
82°
65°
1
84°
64°
2
83°
64°
3
82°
65°
4
85°
63°
5
81°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Mountain City
Mountain City's August 2026 forecast shows daily high temperatures ranging from 78° to 85°, with overnight lows between 59° and 65°. The average high for August is 82° with an average low of 62°. 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 City. See also: September | October | November.