S
M
T
W
T
F
S
26
104°
74°
27
105°
71°
28
105°
72°
29
105°
76°
30
104°
73°
31
108°
77°
1
97°
73°
2
97°
63°
3
103°
63°
4
105°
75°
5
105°
72°
6
104°
73°
7
104°
75°
8
107°
72°
9
105°
69°
10
104°
76°
11
104°
78°
12
105°
77°
13
107°
82°
14
105°
81°
15
104°
76°
16
105°
78°
17
104°
71°
18
110°
75°
19
109°
72°
20
109°
71°
21
106°
73°
22
106°
74°
23
106°
75°
24
111°
74°
25
105°
73°
26
102°
78°
27
99°
73°
28
103°
69°
29
105°
70°
30
104°
73°
31
103°
70°
1
102°
69°
2
103°
73°
3
102°
75°
4
104°
75°
5
102°
73°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Chattanooga
Chattanooga's August 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for August is ° with an average low of °. 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 Chattanooga. See also: September | October | November.
