S
M
T
W
T
F
S
31
74°
49°
1
78°
51°
2
74°
48°
3
82°
58°
4
84°
64°
5
75°
64°
6
77°
58°
7
80°
58°
8
78°
62°
9
79°
64°
10
83°
63°
11
82°
64°
12
80°
63°
13
84°
63°
14
82°
62°
15
83°
62°
16
89°
69°
17
81°
63°
18
79°
62°
19
79°
62°
20
78°
60°
21
75°
55°
22
73°
56°
23
75°
64°
24
83°
65°
25
83°
60°
26
77°
56°
27
75°
60°
28
76°
62°
29
77°
64°
30
79°
64°
1
78°
63°
2
80°
64°
3
84°
65°
4
83°
66°
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 89°, with overnight lows between 55° 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.