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compiled a ranking of the coldest Mays 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. May 1967 (tie)
- Average temperature: 55.6°F
- Monthly high temperature: 67.9°F
- Monthly low temperature: 43.4°F
- Total precipitation: 2.74"

#10. May 1915 (tie)
- Average temperature: 55.6°F
- Monthly high temperature: 66.5°F
- Monthly low temperature: 44.6°F
- Total precipitation: 7.35"

#9. May 1910
- Average temperature: 54.9°F
- Monthly high temperature: 67°F
- Monthly low temperature: 42.8°F
- Total precipitation: 3.28"

#8. May 1954
- Average temperature: 54.8°F
- Monthly high temperature: 66.9°F
- Monthly low temperature: 42.6°F
- Total precipitation: 3.8"

#6. May 1947 (tie)
- Average temperature: 54.7°F
- Monthly high temperature: 66.6°F
- Monthly low temperature: 42.8°F
- Total precipitation: 4.23"

#6. May 1917 (tie)
- Average temperature: 54.7°F
- Monthly high temperature: 67.2°F
- Monthly low temperature: 42.2°F
- Total precipitation: 3.91"

#5. May 1945
- Average temperature: 54.3°F
- Monthly high temperature: 65.5°F
- Monthly low temperature: 43°F
- Total precipitation: 6.16"

#3. May 1997 (tie)
- Average temperature: 54.2°F
- Monthly high temperature: 66.2°F
- Monthly low temperature: 42.3°F
- Total precipitation: 4.03"

#3. May 1935 (tie)
- Average temperature: 54.2°F
- Monthly high temperature: 64.2°F
- Monthly low temperature: 44.2°F
- Total precipitation: 4.52"

#2. May 1924
- Average temperature: 53.4°F
- Monthly high temperature: 65.8°F
- Monthly low temperature: 41°F
- Total precipitation: 1.68"

#1. May 1907
- Average temperature: 52.7°F
- Monthly high temperature: 65.3°F
- Monthly low temperature: 40°F
- Total precipitation: 3.59"