S
M
T
W
T
F
S
26
86°
67°
27
87°
68°
28
86°
67°
29
84°
66°
30
83°
65°
31
80°
65°
1
81°
64°
2
83°
66°
3
83°
63°
4
81°
62°
5
82°
64°
6
83°
65°
7
81°
65°
8
76°
64°
9
77°
61°
10
77°
61°
11
80°
64°
12
83°
65°
13
82°
65°
14
82°
64°
15
75°
64°
16
75°
62°
17
77°
64°
18
81°
64°
19
82°
63°
20
82°
65°
21
72°
53°
22
74°
55°
23
74°
52°
24
73°
60°
25
77°
57°
26
75°
62°
27
74°
62°
28
80°
61°
29
83°
54°
30
76°
58°
31
76°
62°
1
73°
55°
2
81°
63°
3
82°
62°
4
84°
57°
5
81°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Oelwein
Oelwein's August 2026 forecast shows daily high temperatures ranging from 72° to 87°, with overnight lows between 52° and 68°. The average high for August 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 August weather will actually feel in Oelwein. See also: September | October | November.