Coldest Septembers in Iowa since 1895
compiled a ranking of the coldest Septembers in Iowa since 1895 using data from the . Rankings are based on the lowest average temperature in each month. For each of the coldest months listed below, we've included the average state temperature, state-wide highs and lows for the month, and the total precipitation.
#10. September 1965
- Average temperature: 58.8掳F
- Monthly high temperature: 68.5掳F
- Monthly low temperature: 49掳F
- Total precipitation: 9.84"
#8. September 1975 (tie)
- Average temperature: 58.7掳F
- Monthly high temperature: 69.9掳F
- Monthly low temperature: 47.5掳F
- Total precipitation: 2.14"
#8. September 1951 (tie)
- Average temperature: 58.7掳F
- Monthly high temperature: 69.8掳F
- Monthly low temperature: 47.6掳F
- Total precipitation: 2.47"
#7. September 1974
- Average temperature: 58.3掳F
- Monthly high temperature: 71.2掳F
- Monthly low temperature: 45.3掳F
- Total precipitation: 1.59"
#5. September 1949 (tie)
- Average temperature: 58.2掳F
- Monthly high temperature: 71.4掳F
- Monthly low temperature: 44.9掳F
- Total precipitation: 3.2"
#5. September 1902 (tie)
- Average temperature: 58.2掳F
- Monthly high temperature: 69.3掳F
- Monthly low temperature: 47.1掳F
- Total precipitation: 4.45"
#4. September 1924
- Average temperature: 57.8掳F
- Monthly high temperature: 69.4掳F
- Monthly low temperature: 46.3掳F
- Total precipitation: 3"
#3. September 1918
- Average temperature: 57.5掳F
- Monthly high temperature: 70.6掳F
- Monthly low temperature: 44.5掳F
- Total precipitation: 1.84"
#1. September 1993 (tie)
- Average temperature: 57.4掳F
- Monthly high temperature: 67.5掳F
- Monthly low temperature: 47.2掳F
- Total precipitation: 3.69"
#1. September 1896 (tie)
- Average temperature: 57.4掳F
- Monthly high temperature: 68.5掳F
- Monthly low temperature: 46.3掳F
- Total precipitation: 3.97"
