S
M
T
W
T
F
S
26
64°
43°
27
70°
47°
28
73°
48°
29
62°
53°
30
54°
41°
1
51°
38°
2
49°
37°
3
51°
39°
4
57°
37°
5
68°
45°
6
53°
44°
7
52°
43°
8
53°
42°
9
65°
45°
10
58°
46°
11
54°
43°
12
53°
39°
13
55°
45°
14
53°
47°
15
65°
50°
16
70°
53°
17
67°
55°
18
66°
50°
19
75°
68°
20
71°
39°
21
59°
41°
22
64°
46°
23
64°
50°
24
66°
47°
25
63°
51°
26
69°
52°
27
70°
51°
28
75°
54°
29
74°
55°
30
77°
56°
31
76°
57°
1
75°
49°
2
69°
53°
3
69°
53°
4
66°
54°
5
68°
55°
6
75°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Louiseville
Louiseville's May 2026 forecast shows daily high temperatures ranging from 59° to 77°, with overnight lows between 39° and 68°. The average high for May is 70° with an average low of 52°. 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 Louiseville. See also: June | July | August.
