S
M
T
W
T
F
S
26
90°
70°
27
91°
74°
28
91°
73°
29
86°
69°
30
87°
74°
31
86°
72°
1
86°
73°
2
91°
75°
3
92°
75°
4
92°
74°
5
91°
72°
6
91°
74°
7
92°
75°
8
92°
73°
9
93°
74°
10
91°
73°
11
89°
72°
12
91°
73°
13
89°
73°
14
84°
66°
15
83°
65°
16
83°
65°
17
84°
70°
18
84°
69°
19
86°
70°
20
89°
72°
21
88°
70°
22
85°
70°
23
88°
72°
24
90°
66°
25
86°
67°
26
87°
70°
27
88°
69°
28
83°
70°
29
86°
68°
30
83°
69°
31
82°
70°
1
83°
70°
2
82°
69°
3
82°
62°
4
81°
59°
5
80°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Louisville
Louisville's August 2026 forecast shows daily high temperatures ranging from 80° to 93°, with overnight lows between 59° and 75°. The average high for August is 87° with an average low of 70°. 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 Louisville. See also: September | October | November.
