S
M
T
W
T
F
S
26
77°
49°
27
75°
53°
28
63°
48°
29
61°
40°
30
57°
36°
1
57°
35°
2
62°
34°
3
77°
46°
4
83°
41°
5
61°
43°
6
57°
37°
7
68°
33°
8
75°
45°
9
75°
49°
10
71°
42°
11
71°
40°
12
82°
49°
13
74°
47°
14
77°
41°
15
84°
57°
16
85°
61°
17
84°
64°
18
77°
63°
19
68°
51°
20
67°
46°
21
69°
50°
22
68°
53°
23
76°
54°
24
83°
51°
25
87°
54°
26
86°
55°
27
91°
58°
28
87°
64°
29
86°
58°
30
85°
65°
31
79°
63°
1
86°
65°
2
85°
51°
3
85°
57°
4
88°
56°
5
85°
68°
6
90°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Iowa City
Iowa City's May 2026 forecast shows daily high temperatures ranging from 90° to 90°, with overnight lows between 69° and 69°. The average high for May is 90° with an average low of 69°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Iowa City. See also: June | July | August.
