S
M
T
W
T
F
S
26
89°
70°
27
85°
72°
28
77°
63°
29
82°
59°
30
86°
63°
31
75°
61°
1
78°
66°
2
77°
64°
3
82°
56°
4
83°
60°
5
72°
60°
6
79°
58°
7
82°
64°
8
81°
64°
9
78°
60°
10
82°
62°
11
81°
66°
12
81°
65°
13
76°
65°
14
80°
66°
15
81°
67°
16
83°
63°
17
81°
59°
18
79°
63°
19
77°
57°
20
79°
59°
21
76°
59°
22
78°
54°
23
76°
54°
24
76°
59°
25
80°
65°
26
80°
59°
27
77°
56°
28
73°
55°
29
74°
56°
30
74°
60°
31
74°
59°
1
76°
57°
2
73°
58°
3
80°
53°
4
73°
60°
5
73°
59°
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 73° to 80°, with overnight lows between 53° and 65°. The average high for August is 76° with an average low of 58°. 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.
