S
M
T
W
T
F
S
28
77°
48°
29
81°
64°
30
92°
69°
1
86°
60°
2
84°
64°
3
81°
59°
4
80°
55°
5
83°
48°
6
85°
48°
7
71°
56°
8
66°
54°
9
66°
51°
10
71°
58°
11
73°
60°
12
88°
66°
13
89°
65°
14
86°
61°
15
80°
60°
16
76°
58°
17
80°
59°
18
80°
59°
19
81°
57°
20
80°
56°
21
74°
58°
22
76°
60°
23
77°
60°
24
75°
59°
25
77°
60°
26
74°
57°
27
74°
60°
28
78°
60°
29
76°
59°
30
79°
60°
31
80°
61°
1
82°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Ontonagon
Ontonagon's July 2026 forecast shows daily high temperatures ranging from 66° to 89°, with overnight lows between 51° and 66°. The average high for July is 77° with an average low of 59°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Ontonagon. See also: August | September | October.