World Resorts USA Iowa City Weather

Iowa City weather in May

Weather in Iowa City: May

Average day temperature: 68.8°F
Average night temperature: 54.3°F
Number of sunny days: 12 days
Day length: 14.0 - 15.0 hours
Number of rainy days: 3 days
Precipitation totals: 1.5 in.

Air temperature in May, °F

Show year:
2026
2025
2024

The highest day temperature during May of 2026 was 91°F. At the same time the lowest night temperature was 37°F. Daily and nightly averages during May were 74.3°F and 54.1°F.

Sunny, partly cloudy and cloudy days

Number of sunny, partly cloudy and cloudy days in May is almost equal.

Precipitation total in May, in.

Precipitation total value in Iowa City in May is 1.5 in. Other months of the year show relatively similar values.

Wind speed in May, mph

The average wind speed value in May is 9.5 mph

Average sunny hours

This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in May is: 8.4.

Best time for vacation in Iowa City

Sunniest months:
September 19 days
October 17 days
August 15 days
Warmest months:
July 83.0 °F
August 82.3 °F
June 79.6 °F
Coldest months:
January 26.5 °F
February 33.0 °F
December 35.0 °F
Rainiest months:
June 3 days
May 3 days
April 3 days
Windiest months:
April 11.6 mph
March 11.4 mph
November 10.2 mph

Iowa City on a weather map

Iowa City
+72°F
SW 6 mph
Feels like: +77°F
Precip.: 19%
Places in USA:
Name
°F
+73°F
+79°F
+77°F
+75°F
+68°F
+82°F
+72°F
+81°F
+77°F
+68°F
+57°F
+68°F
+82°F
+84°F
+72°F
24 Hours Forecast
Iowa City
Local time: 09:06
August 13, thursday
1200
75°F
W
11 mph
1500
79°F
W
11 mph
1800
79°F
W
12 mph
2100
72°F
W
11 mph
August 14, friday
0000
70°F
W
14 mph
0300
70°F
W
9 mph
0600
70°F
W
9 mph
0900
73°F
W
9 mph
Units of measurement: °C / °F