S
M
T
W
T
F
S
26
83°
65°
27
82°
66°
28
81°
66°
29
82°
65°
30
83°
66°
31
79°
65°
1
76°
62°
2
76°
64°
3
77°
65°
4
78°
65°
5
80°
64°
6
82°
65°
7
83°
66°
8
82°
66°
9
83°
65°
10
82°
65°
11
83°
64°
12
84°
66°
13
84°
66°
14
85°
56°
15
81°
57°
16
79°
60°
17
78°
58°
18
83°
58°
19
82°
56°
20
76°
54°
21
75°
56°
22
75°
56°
23
74°
57°
24
76°
56°
25
76°
62°
26
75°
62°
27
82°
55°
28
82°
54°
29
74°
54°
30
72°
55°
31
74°
54°
1
73°
53°
2
71°
53°
3
74°
54°
4
73°
52°
5
74°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Oshkosh
Oshkosh's August 2026 forecast shows daily high temperatures ranging from 71° to 85°, with overnight lows between 52° and 66°. The average high for August is 79° with an average low of 60°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Oshkosh. See also: September | October | November.
