S
M
T
W
T
F
S
26
58°
42°
27
69°
45°
28
65°
51°
29
54°
36°
30
52°
32°
1
48°
30°
2
57°
28°
3
68°
45°
4
80°
43°
5
58°
40°
6
55°
31°
7
61°
29°
8
69°
29°
9
72°
44°
10
64°
31°
11
56°
35°
12
73°
34°
13
63°
36°
14
70°
33°
15
80°
47°
16
85°
59°
17
82°
68°
18
76°
66°
19
73°
45°
20
62°
40°
21
59°
46°
22
63°
51°
23
69°
51°
24
77°
55°
25
81°
57°
26
78°
57°
27
76°
54°
28
76°
53°
29
78°
56°
30
75°
52°
31
77°
57°
1
78°
58°
2
78°
57°
3
70°
53°
4
70°
52°
5
73°
58°
6
79°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Lafayette
Lafayette's May 2026 forecast shows daily high temperatures ranging from 59° to 82°, with overnight lows between 40° and 68°. The average high for May is 74° with an average low of 55°. 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 Lafayette. See also: June | July | August.