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Iowa United States of America
Temperatures in September
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Iowa temperatures in September

Iowa is a region in the United States of America. In September the average maximum daytime temperatures are high and range from 23°C in Mason City to 26°C in Keokuk. Nighttime temperatures generally drop to 14°C in Keokuk and 10°C in Mason City.

What is the temperature of the different cities in Iowa in September?

Curious about the September temperatures in the prime spots of Iowa? Navigate the map below and tap on a destination dot for more detailed stats.

Weather conditions Weather
Temperatures
Precipitation
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Legend very warm warm pleasant moderate cold very cold
Very warm means maximum temperatures above 30°C. Warm: 22°C to 30°C. Pleasant: 18°C to 22°C Moderate: 12°C to 18°C. Cold: 2°C to 12°C. Very cold: lower than 2°C

  • What is the warmest city in September in Iowa?
    • Based on our systematic data collection, Keokuk has been identified as the city with the highest average temperatures. The daytime temperature usually hovers around 26°C, while at night is goes down to an approximate temperature of 14°C."

  • What is the coldest city in September in Iowa?
    • In our database, Mason City is the chilliest city in September in Iowa. Daytime temperatures typically peak at 23°C, while the nighttime lows hover around 10°C.

  • How much sun does Iowa get in September?
    • Des Moines enjoys close to 240 hours of sunlight. This not only brightens the days but also uplifts the atmosphere during the month.

    Interested in more climate information?

    We have much more information about the climate in Iowa. Interested in the weather conditions in a specific month? Select the month below.

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