Average Temperatures for Iowa in August





Average temperatures for August 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 August temperatures
High °F Low °F Place High °C Low °C
85 65 Burlington 29 18
83 62 Cedar Rapids 29 17
83 63 Clinton 28 17
80 57 Cresco 26 14
82 61 Davenport 28 16
82 59 Decorah 28 15
82 63 Dubuque 28 17
85 63 Iowa City 30 17
85 65 Keokuk 30 18
82 60 Waterloo 28 16

Central Iowa

Average daily temperatures in August
High °F Low °F Place High °C Low °C
83 62 Ames 28 16
84 65 Des Moines 29 18
82 61 Fort Dodge 28 16
82 60 Marshalltown 28 16
81 58 Mason City 27 15
84 62 Ottumwa 29 17
84 64 Rathbun Lake Dam 29 18

Western Iowa

August temperatures: daily averages
High °F Low °F Place High °C Low °C
82 61 Carroll 28 16
83 61 Lake Park 28 16
81 57 Milford 27 14
84 60 Onawa 29 15
86 64 Shenandoah 30 18
83 61 Sioux City 29 16
81 61 Storm Lake 27 16
Reference

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

Iowa Temperatures
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