S
M
T
W
T
F
S
31
79°
58°
1
78°
54°
2
84°
56°
3
82°
64°
4
79°
66°
5
81°
68°
6
83°
67°
7
81°
65°
8
83°
66°
9
84°
65°
10
86°
65°
11
85°
62°
12
80°
64°
13
82°
61°
14
76°
62°
15
76°
56°
16
76°
56°
17
77°
58°
18
80°
63°
19
83°
62°
20
85°
65°
21
79°
66°
22
80°
66°
23
83°
62°
24
79°
59°
25
79°
67°
26
87°
65°
27
80°
62°
28
79°
61°
29
80°
60°
30
81°
64°
1
83°
68°
2
86°
69°
3
84°
64°
4
80°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Onalaska
Onalaska's June 2026 forecast shows daily high temperatures ranging from 76° to 87°, with overnight lows between 54° and 69°. The average high for June is 81° with an average low of 63°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Onalaska. See also: July | August | September.
