S
M
T
W
T
F
S
26
90°
73°
27
96°
70°
28
86°
67°
29
85°
65°
30
83°
64°
31
69°
61°
1
79°
62°
2
80°
62°
3
82°
60°
4
77°
64°
5
74°
59°
6
79°
53°
7
82°
61°
8
81°
58°
9
81°
62°
10
83°
64°
11
82°
72°
12
84°
70°
13
77°
66°
14
75°
64°
15
75°
66°
16
77°
63°
17
79°
57°
18
81°
64°
19
77°
59°
20
79°
54°
21
82°
64°
22
77°
57°
23
75°
50°
24
79°
52°
25
77°
59°
26
77°
61°
27
79°
57°
28
79°
52°
29
79°
63°
30
79°
70°
31
86°
72°
1
86°
70°
2
82°
66°
3
84°
68°
4
88°
68°
5
81°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Postville
Postville's August 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for August is ° with an average low of °. 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 Postville. See also: September | October | November.