S
M
T
W
T
F
S
26
87°
75°
27
88°
75°
28
89°
76°
29
89°
75°
30
90°
76°
31
89°
77°
1
89°
77°
2
90°
78°
3
91°
78°
4
92°
77°
5
92°
78°
6
93°
78°
7
91°
77°
8
91°
78°
9
92°
78°
10
92°
77°
11
93°
78°
12
92°
78°
13
92°
77°
14
93°
78°
15
90°
77°
16
93°
76°
17
93°
75°
18
94°
76°
19
93°
75°
20
94°
76°
21
92°
74°
22
93°
75°
23
94°
75°
24
94°
76°
25
93°
74°
26
94°
72°
27
91°
71°
28
90°
71°
29
90°
72°
30
92°
71°
31
93°
74°
1
93°
72°
2
92°
73°
3
92°
72°
4
91°
72°
5
92°
73°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Iowa
Iowa's August 2026 forecast shows daily high temperatures ranging from 87° to 94°, with overnight lows between 71° and 78°. The average high for August is 92° with an average low of 75°. 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 Iowa. See also: September | October | November.
