S
M
T
W
T
F
S
26
88°
61°
27
84°
59°
28
82°
57°
29
90°
62°
30
81°
62°
1
64°
52°
2
73°
46°
3
78°
36°
4
82°
34°
5
84°
43°
6
92°
60°
7
78°
63°
8
78°
59°
9
69°
59°
10
84°
60°
11
94°
58°
12
67°
58°
13
85°
53°
14
82°
52°
15
82°
37°
16
97°
46°
17
94°
64°
18
100°
61°
19
95°
63°
20
94°
58°
21
92°
65°
22
93°
66°
23
81°
69°
24
83°
69°
25
82°
69°
26
83°
70°
27
79°
69°
28
83°
68°
29
81°
67°
30
80°
65°
31
81°
62°
1
83°
63°
2
82°
64°
3
83°
64°
4
82°
66°
5
87°
65°
6
83°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Louisville
Louisville's May 2026 forecast shows daily high temperatures ranging from 79° to 87°, with overnight lows between 62° and 70°. The average high for May is 82° with an average low of 66°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Louisville. See also: June | July | August.
