S
M
T
W
T
F
S
31
80°
33°
1
81°
38°
2
81°
39°
3
81°
42°
4
81°
47°
5
82°
56°
6
76°
54°
7
84°
51°
8
81°
58°
9
81°
60°
10
81°
57°
11
73°
55°
12
72°
51°
13
70°
56°
14
64°
39°
15
74°
34°
16
64°
41°
17
61°
38°
18
69°
48°
19
68°
48°
20
67°
43°
21
71°
39°
22
71°
37°
23
74°
39°
24
72°
56°
25
72°
46°
26
77°
40°
27
73°
56°
28
79°
64°
29
85°
67°
30
80°
67°
1
74°
66°
2
88°
64°
3
81°
60°
4
82°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Ontonagon
Ontonagon's June 2026 forecast shows daily high temperatures ranging from 73° to 88°, with overnight lows between 56° and 67°. The average high for June is 80° 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 Ontonagon. See also: July | August | September.