S
M
T
W
T
F
S
26
85°
71°
27
89°
74°
28
91°
77°
29
85°
69°
30
85°
66°
31
85°
68°
1
83°
71°
2
81°
69°
3
84°
67°
4
87°
67°
5
89°
70°
6
88°
73°
7
92°
76°
8
91°
75°
9
90°
73°
10
93°
76°
11
94°
70°
12
83°
68°
13
92°
72°
14
91°
76°
15
96°
77°
16
95°
74°
17
87°
73°
18
85°
70°
19
85°
68°
20
84°
68°
21
88°
69°
22
87°
70°
23
84°
65°
24
82°
63°
25
83°
62°
26
85°
65°
27
88°
68°
28
88°
68°
29
89°
65°
30
94°
69°
31
98°
72°
1
98°
73°
2
97°
75°
3
100°
75°
4
97°
74°
5
90°
74°
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 90° to 100°, with overnight lows between 72° and 75°. The average high for August is 97° with an average low of 74°. 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.
