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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 Mays in Massachusetts 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. May 2022
- Average temperature: 59.8°F
- Monthly high temperature: 70.7°F
- Monthly low temperature: 48.9°F
- Total precipitation: 2.23"

#9. May 2024
- Average temperature: 59.9°F
- Monthly high temperature: 70.1°F
- Monthly low temperature: 49.6°F
- Total precipitation: 4.74"

#8. May 2010
- Average temperature: 60.3°F
- Monthly high temperature: 72.7°F
- Monthly low temperature: 47.9°F
- Total precipitation: 2.74"

#7. May 2012
- Average temperature: 60.4°F
- Monthly high temperature: 70.2°F
- Monthly low temperature: 50.6°F
- Total precipitation: 4.79"

#5. May 1918 (tie)
- Average temperature: 60.5°F
- Monthly high temperature: 72.6°F
- Monthly low temperature: 48.3°F
- Total precipitation: 2.27"

#5. May 1911 (tie)
- Average temperature: 60.5°F
- Monthly high temperature: 73.2°F
- Monthly low temperature: 47.7°F
- Total precipitation: 1.43"

#4. May 2018
- Average temperature: 60.8°F
- Monthly high temperature: 72.6°F
- Monthly low temperature: 49°F
- Total precipitation: 2.05"

#3. May 1944
- Average temperature: 60.9°F
- Monthly high temperature: 74.5°F
- Monthly low temperature: 47.3°F
- Total precipitation: 1.13"

#2. May 1991
- Average temperature: 61.2°F
- Monthly high temperature: 73.9°F
- Monthly low temperature: 48.4°F
- Total precipitation: 3.84"

#1. May 2015
- Average temperature: 61.8°F
- Monthly high temperature: 75.3°F
- Monthly low temperature: 48.3°F
- Total precipitation: 0.96"