Hottest Septembers in Iowa since 1895
In 2022, the continental United States experienced its , according to data from the National Oceanic and Atmospheric Administration, while 20 states saw one of their in the same month. The year prior, July marked the .
Climate change is driving rising temperatures and more record heat. The has climbed each decade since 1880 by about .14 degrees Fahrenheit, or roughly 2 degrees Fahrenheit total.
compiled a ranking of the hottest Septembers in Iowa since 1895 using data from the . Rankings are based on the highest average temperature in each month. For each of the hottest months listed below, we've included the average state temperature, state-wide highs and lows for the month, and the total precipitation.
#10. September 1978
- Average temperature: 67.5掳F
- Monthly high temperature: 79.9掳F
- Monthly low temperature: 55.1掳F
- Total precipitation: 5.51"
#9. September 2005
- Average temperature: 67.6掳F
- Monthly high temperature: 80.2掳F
- Monthly low temperature: 55掳F
- Total precipitation: 3.29"
#8. September 1925
- Average temperature: 67.9掳F
- Monthly high temperature: 79.5掳F
- Monthly low temperature: 56.4掳F
- Total precipitation: 5.04"
#5. September 2019 (tie)
- Average temperature: 68.2掳F
- Monthly high temperature: 78掳F
- Monthly low temperature: 58.4掳F
- Total precipitation: 6.21"
#5. September 1998 (tie)
- Average temperature: 68.2掳F
- Monthly high temperature: 80.8掳F
- Monthly low temperature: 55.7掳F
- Total precipitation: 2.06"
#5. September 1939 (tie)
- Average temperature: 68.2掳F
- Monthly high temperature: 83掳F
- Monthly low temperature: 53.5掳F
- Total precipitation: 0.84"
#3. September 2015 (tie)
- Average temperature: 68.4掳F
- Monthly high temperature: 79.3掳F
- Monthly low temperature: 57.5掳F
- Total precipitation: 4.18"
#3. September 1933 (tie)
- Average temperature: 68.4掳F
- Monthly high temperature: 80.9掳F
- Monthly low temperature: 56掳F
- Total precipitation: 4.16"
#1. September 1931 (tie)
- Average temperature: 70掳F
- Monthly high temperature: 81.7掳F
- Monthly low temperature: 58.3掳F
- Total precipitation: 6.73"
#1. September 1897 (tie)
- Average temperature: 70掳F
- Monthly high temperature: 84.3掳F
- Monthly low temperature: 55.7掳F
- Total precipitation: 1.97"
