S
M
T
W
T
F
S
26
93°
72°
27
92°
76°
28
95°
74°
29
94°
76°
30
91°
70°
31
91°
64°
1
92°
73°
2
79°
66°
3
79°
65°
4
82°
68°
5
84°
68°
6
89°
70°
7
86°
69°
8
84°
68°
9
85°
69°
10
84°
68°
11
85°
70°
12
86°
69°
13
89°
70°
14
85°
70°
15
88°
71°
16
83°
64°
17
90°
70°
18
90°
69°
19
91°
71°
20
91°
70°
21
90°
70°
22
89°
69°
23
89°
70°
24
88°
70°
25
88°
69°
26
89°
69°
27
89°
68°
28
88°
69°
29
88°
69°
30
89°
68°
31
88°
69°
1
89°
68°
2
89°
69°
3
88°
68°
4
86°
67°
5
87°
67°
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 79° to 91°, with overnight lows between 64° and 71°. The average high for August is 87° 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 Lookout Mountain. See also: September | October | November.