S
M
T
W
T
F
S
26
93°
74°
27
93°
74°
28
86°
71°
29
84°
65°
30
82°
60°
31
78°
65°
1
77°
64°
2
80°
62°
3
82°
63°
4
83°
65°
5
77°
59°
6
82°
66°
7
85°
68°
8
87°
66°
9
84°
64°
10
85°
64°
11
83°
65°
12
82°
64°
13
85°
63°
14
84°
62°
15
79°
63°
16
83°
67°
17
89°
68°
18
89°
68°
19
88°
66°
20
86°
65°
21
86°
66°
22
85°
67°
23
87°
66°
24
86°
66°
25
85°
64°
26
82°
62°
27
83°
63°
28
85°
64°
29
84°
63°
30
85°
64°
31
86°
64°
1
85°
63°
2
86°
64°
3
86°
64°
4
85°
63°
5
85°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Cedar Rapids
Cedar Rapids's August 2026 forecast shows daily high temperatures ranging from 77° to 89°, with overnight lows between 59° and 68°. The average high for August is 84° with an average low of 64°. 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 Cedar Rapids. See also: September | October | November.