S
M
T
W
T
F
S
26
99°
78°
27
95°
78°
28
88°
72°
29
88°
71°
30
88°
65°
31
82°
65°
1
81°
64°
2
83°
64°
3
85°
64°
4
86°
63°
5
74°
55°
6
81°
61°
7
83°
63°
8
87°
69°
9
94°
71°
10
91°
69°
11
93°
68°
12
86°
67°
13
91°
67°
14
90°
66°
15
91°
66°
16
85°
62°
17
90°
69°
18
89°
69°
19
90°
68°
20
88°
67°
21
88°
68°
22
89°
67°
23
88°
67°
24
87°
66°
25
87°
65°
26
86°
64°
27
86°
64°
28
87°
63°
29
86°
64°
30
86°
65°
31
87°
64°
1
86°
65°
2
87°
65°
3
87°
64°
4
86°
64°
5
86°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Oskaloosa
Oskaloosa's August 2026 forecast shows daily high temperatures ranging from 74° to 94°, with overnight lows between 55° and 71°. The average high for August is 87° with an average low of 65°. 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 Oskaloosa. See also: September | October | November.
