Average Temperatures for Iowa in May





Average temperatures for May at cities, towns and lakes throughout Iowa are listed below in degrees Fahrenheit and Celsius.

You can jump to a separate table for each region of the state: Eastern, Central and Western Iowa.

The tables give the normals for maximum and minimum temperatures based on weather data collected from 1981 to 2010 by the US National Climatic Data Center.

Eastern Iowa

Average May temperatures
High °F Low °F Place High °C Low °C
74 53 Burlington 24 12
74 50 Cedar Rapids 23 10
74 51 Clinton 23 11
69 44 Cresco 20 7
72 50 Davenport 22 10
72 47 Decorah 22 8
71 50 Dubuque 22 10
75 51 Iowa City 24 11
73 52 Keokuk 23 11
72 49 Waterloo 22 9

Central Iowa

Average daily temperatures in May
High °F Low °F Place High °C Low °C
73 50 Ames 23 10
72 52 Des Moines 22 11
71 48 Fort Dodge 22 9
71 48 Marshalltown 22 9
70 47 Mason City 21 8
72 51 Ottumwa 22 10
71 51 Rathbun Lake Dam 22 11

Western Iowa

May temperatures: daily averages
High °F Low °F Place High °C Low °C
72 49 Carroll 22 9
72 48 Lake Park 22 9
71 45 Milford 22 7
74 48 Onawa 23 9
74 52 Shenandoah 23 11
73 49 Sioux City 23 9
70 49 Storm Lake 21 9
Reference

National Climatic Data Center. NOAA's 1981-2010 Climate Normals.

Iowa Temperatures
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