S
M
T
W
T
F
S
31
74°
49°
1
78°
51°
2
74°
48°
3
80°
47°
4
85°
59°
5
80°
62°
6
82°
61°
7
81°
62°
8
76°
64°
9
81°
66°
10
82°
64°
11
76°
60°
12
78°
56°
13
80°
62°
14
66°
52°
15
75°
52°
16
73°
55°
17
62°
51°
18
72°
55°
19
72°
52°
20
71°
53°
21
71°
51°
22
74°
53°
23
75°
59°
24
73°
58°
25
73°
57°
26
75°
57°
27
76°
63°
28
82°
66°
29
87°
68°
30
86°
69°
1
86°
68°
2
86°
65°
3
84°
64°
4
83°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Oshkosh
Oshkosh's June 2026 forecast shows daily high temperatures ranging from 73° to 87°, with overnight lows between 53° and 69°. The average high for June is 80° with an average low of 62°. 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 Oshkosh. See also: July | August | September.