S
M
T
W
T
F
S
26
87°
58°
27
84°
59°
28
90°
59°
29
90°
65°
30
92°
64°
31
92°
62°
1
91°
58°
2
85°
60°
3
91°
65°
4
92°
62°
5
84°
56°
6
86°
54°
7
81°
55°
8
81°
56°
9
83°
56°
10
84°
58°
11
90°
61°
12
91°
63°
13
92°
61°
14
91°
59°
15
90°
54°
16
82°
54°
17
82°
55°
18
84°
61°
19
90°
55°
20
89°
54°
21
85°
56°
22
85°
60°
23
86°
59°
24
86°
56°
25
82°
57°
26
81°
57°
27
80°
56°
28
84°
58°
29
87°
58°
30
88°
51°
31
80°
54°
1
78°
53°
2
79°
54°
3
85°
57°
4
86°
58°
5
88°
48°
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 78° to 92°, with overnight lows between 48° and 65°. The average high for August is 86° 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.
