S
M
T
W
T
F
S
26
56°
42°
27
65°
44°
28
53°
37°
29
58°
37°
30
N/A
1
66°
38°
2
70°
46°
3
83°
46°
4
83°
46°
5
61°
42°
6
67°
36°
7
77°
47°
8
86°
49°
9
79°
50°
10
80°
52°
11
79°
50°
12
76°
48°
13
75°
50°
14
74°
48°
15
69°
52°
16
68°
53°
17
72°
54°
18
75°
55°
19
78°
56°
20
81°
56°
21
78°
53°
22
71°
48°
23
72°
49°
24
71°
49°
25
69°
47°
26
70°
48°
27
71°
48°
28
74°
49°
29
75°
59°
30
84°
60°
31
82°
60°
1
85°
61°
2
84°
61°
3
84°
60°
4
78°
61°
5
78°
60°
6
76°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in La Crosse
La Crosse's May 2026 forecast shows daily high temperatures ranging from 61° to 86°, with overnight lows between 36° and 61°. The average high for May is 76° with an average low of 51°. 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 La Crosse. See also: June | July | August.