S
M
T
W
T
F
S
26
85°
71°
27
88°
75°
28
87°
73°
29
85°
72°
30
75°
64°
1
64°
53°
2
75°
50°
3
79°
48°
4
80°
50°
5
83°
66°
6
83°
67°
7
78°
58°
8
75°
64°
9
87°
69°
10
89°
68°
11
77°
65°
12
77°
62°
13
93°
61°
14
90°
65°
15
87°
66°
16
87°
69°
17
83°
76°
18
87°
76°
19
84°
64°
20
79°
64°
21
80°
69°
22
88°
68°
23
79°
67°
24
79°
66°
25
81°
66°
26
86°
71°
27
78°
68°
28
88°
73°
29
87°
70°
30
89°
73°
31
87°
70°
1
86°
68°
2
85°
68°
3
84°
67°
4
87°
69°
5
89°
71°
6
89°
74°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Livingston-Onalaska
Livingston-Onalaska's May 2026 forecast shows daily high temperatures ranging from 78° to 89°, with overnight lows between 66° and 74°. The average high for May is 85° with an average low of 69°. 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 Livingston-Onalaska. See also: June | July | August.