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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 Marches 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. March 1973
- Average temperature: 42.1°F
- Monthly high temperature: 50.2°F
- Monthly low temperature: 34.1°F
- Total precipitation: 3.97"

#8. March 2021 (tie)
- Average temperature: 42.3°F
- Monthly high temperature: 52.5°F
- Monthly low temperature: 32.1°F
- Total precipitation: 2.78"

#8. March 1938 (tie)
- Average temperature: 42.3°F
- Monthly high temperature: 53.8°F
- Monthly low temperature: 30.8°F
- Total precipitation: 2.33"

#7. March 2016
- Average temperature: 42.4°F
- Monthly high temperature: 52.8°F
- Monthly low temperature: 32°F
- Total precipitation: 2.28"

#6. March 2025
- Average temperature: 42.6°F
- Monthly high temperature: 55.6°F
- Monthly low temperature: 29.5°F
- Total precipitation: 2.66"

#5. March 2000
- Average temperature: 43.1°F
- Monthly high temperature: 54.6°F
- Monthly low temperature: 31.5°F
- Total precipitation: 1"

#4. March 1945
- Average temperature: 44°F
- Monthly high temperature: 55.9°F
- Monthly low temperature: 32°F
- Total precipitation: 2.83"

#3. March 1946
- Average temperature: 45.6°F
- Monthly high temperature: 56.4°F
- Monthly low temperature: 34.8°F
- Total precipitation: 4.03"

#2. March 1910
- Average temperature: 47.7°F
- Monthly high temperature: 61.5°F
- Monthly low temperature: 33.8°F
- Total precipitation: 0.16"

#1. March 2012
- Average temperature: 51.6°F
- Monthly high temperature: 62.9°F
- Monthly low temperature: 40.2°F
- Total precipitation: 1.91"