S
M
T
W
T
F
S
26
94°
78°
27
94°
78°
28
97°
77°
29
92°
78°
30
87°
71°
31
92°
67°
1
90°
72°
2
84°
72°
3
86°
72°
4
92°
72°
5
93°
71°
6
90°
71°
7
91°
70°
8
91°
68°
9
91°
72°
10
95°
73°
11
95°
71°
12
94°
69°
13
97°
75°
14
96°
77°
15
98°
76°
16
97°
76°
17
99°
74°
18
92°
74°
19
94°
69°
20
94°
73°
21
92°
71°
22
93°
70°
23
90°
70°
24
91°
65°
25
91°
66°
26
92°
67°
27
92°
69°
28
93°
71°
29
93°
70°
30
93°
72°
31
96°
72°
1
98°
72°
2
100°
74°
3
100°
75°
4
101°
75°
5
101°
76°
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.
