S
M
T
W
T
F
S
26
107°
88°
27
106°
86°
28
105°
83°
29
103°
83°
30
98°
81°
31
98°
81°
1
99°
82°
2
99°
84°
3
104°
85°
4
105°
85°
5
106°
84°
6
106°
85°
7
104°
84°
8
103°
85°
9
105°
84°
10
104°
84°
11
103°
83°
12
104°
82°
13
99°
82°
14
103°
84°
15
104°
84°
16
104°
83°
17
105°
84°
18
105°
84°
19
104°
83°
20
105°
84°
21
104°
83°
22
100°
83°
23
98°
82°
24
107°
85°
25
107°
86°
26
108°
85°
27
106°
79°
28
103°
80°
29
102°
76°
30
99°
78°
31
100°
77°
1
100°
77°
2
99°
75°
3
98°
76°
4
101°
78°
5
105°
80°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Lookout Mountain
Lookout Mountain's August 2026 forecast shows daily high temperatures ranging from 98° to 108°, with overnight lows between 75° and 88°. The average high for August is 103° with an average low of 82°. 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 Lookout Mountain. See also: September | October | November.