S
M
T
W
T
F
S
26
73°
53°
27
65°
44°
28
61°
41°
29
60°
38°
30
58°
39°
1
55°
37°
2
57°
38°
3
60°
40°
4
65°
49°
5
66°
48°
6
65°
47°
7
62°
39°
8
60°
43°
9
61°
41°
10
63°
50°
11
64°
53°
12
73°
50°
13
64°
47°
14
63°
45°
15
64°
45°
16
65°
46°
17
65°
47°
18
66°
45°
19
66°
45°
20
67°
46°
21
68°
52°
22
72°
52°
23
68°
48°
24
67°
47°
25
68°
48°
26
68°
49°
27
69°
51°
28
70°
50°
29
72°
54°
30
71°
55°
31
74°
54°
1
78°
57°
2
80°
60°
3
79°
62°
4
80°
60°
5
83°
61°
6
75°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Onalaska Town
Onalaska Town's May 2026 forecast shows daily high temperatures ranging from 55° to 83°, with overnight lows between 37° and 63°. The average high for May is 67° with an average low of 49°. 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 Onalaska Town. See also: June | July | August.
