Counties in Ohio with the fastest-rising temperatures in the last 100 years

Written by:
January 3, 2023
Sleepydre // Wikicommons

Counties in Ohio with the fastest-rising temperatures in the last 100 years

Hitting 116 degrees F in normally temperate Portland, Oregon. 105 degrees in Reno in September, just as summer is meant to be waning. And in California's Death Valley National Park, temperatures hit almost 130 degrees in the aptly named Furnace Creek, marking a world record for the hottest September day in history.

2021 and 2022 saw some of the hottest temperatures ever recorded, as across the country extreme heat waves wreaked havoc on communities accustomed to more moderate weather. For many regions, the consequences were grave: in the 2021 Western heatwave, hundreds lost their lives, largely due to a lack of air conditioning, and wildfires ravaged the area.

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Stacker

Map of the past year's temperatures compared to the 100-year average

While not every county in the nation has experienced such extreme heat, climate change has dramatically changed the heat landscape in nearly every state. Coastal regions and the Southern U.S. are particularly vulnerable to rising temperatures, and are also frequently targets of extreme weather events like hurricanes and tornadoes.

Just as all states are not impacted equally by rising temperatures, regions within states have also seen widely different temperature changes over the last decades. Factors such as proximity to urban areas, bodies of water, and mountains can dramatically change the climate of a region. Stacker cited data from the National Oceanic and Atmospheric Administration's National Center for Environmental Information to identify the counties in Ohio with the greatest departure from average temperatures during the period December 2021 to November 2022 compared to the 1901-2000 average. Average temperature over the past year served as a tiebreaker. Additional data on recent average high and low temperatures for each county is also included.

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Bwsmith84 // Wikimedia Commons

#50. Harrison County

- Average temperature, Dec. 2021-Nov. 2022: 51.7 degrees Fahrenheit (1.8 F above 1901-2000 average)
- #18 warmest year since 1895
- Recent average low: 41.2 F (2.1 F above century average)
- Recent average high: 62.2 F (1.4 F above century average)

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Derek Jensen (Tysto) // Wikimedia Commons

#49. Van Wert County

- Average temperature, Dec. 2021-Nov. 2022: 51.7 degrees Fahrenheit (1.8 F above 1901-2000 average)
- #20 warmest year since 1895
- Recent average low: 41.6 F (1.6 F above century average)
- Recent average high: 61.8 F (2 F above century average)

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Derek Jensen // Wikimedia Commons

#48. Auglaize County

- Average temperature, Dec. 2021-Nov. 2022: 51.9 degrees Fahrenheit (1.8 F above 1901-2000 average)
- #19 warmest year since 1895
- Recent average low: 41.7 F (1.7 F above century average)
- Recent average high: 62 F (1.9 F above century average)

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Rona Proudfoot // Wikimedia Commons

#47. Erie County

- Average temperature, Dec. 2021-Nov. 2022: 51.9 degrees Fahrenheit (1.8 F above 1901-2000 average)
- #19 warmest year since 1895
- Recent average low: 43.4 F (1.8 F above century average)
- Recent average high: 60.4 F (1.8 F above century average)

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Aesopposea // Wikimedia Commons

#46. Clermont County

- Average temperature, Dec. 2021-Nov. 2022: 54.6 degrees Fahrenheit (1.8 F above 1901-2000 average)
- #18 warmest year since 1895
- Recent average low: 43.5 F (1.4 F above century average)
- Recent average high: 65.8 F (2.2 F above century average)

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OHWiki // Wikimedia Commons

#45. Ashland County

- Average temperature, Dec. 2021-Nov. 2022: 50.6 degrees Fahrenheit (1.9 F above 1901-2000 average)
- #18 warmest year since 1895
- Recent average low: 40.5 F (2.3 F above century average)
- Recent average high: 60.7 F (1.5 F above century average)

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Eric Lochtefeld // Wikimedia Commons

#44. Mercer County

- Average temperature, Dec. 2021-Nov. 2022: 51.8 degrees Fahrenheit (1.9 F above 1901-2000 average)
- #18 warmest year since 1895
- Recent average low: 41.4 F (1.6 F above century average)
- Recent average high: 62.2 F (2.2 F above century average)

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Willjay // Wikimedia Commons

#43. Guernsey County

- Average temperature, Dec. 2021-Nov. 2022: 52.6 degrees Fahrenheit (1.9 F above 1901-2000 average)
- #15 warmest year since 1895
- Recent average low: 41.7 F (2.5 F above century average)
- Recent average high: 63.4 F (1.3 F above century average)

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Leslie K. Dellovade // Wikimedia Commons

#42. Muskingum County

- Average temperature, Dec. 2021-Nov. 2022: 52.7 degrees Fahrenheit (1.9 F above 1901-2000 average)
- #16 warmest year since 1895
- Recent average low: 42 F (2.6 F above century average)
- Recent average high: 63.4 F (1.2 F above century average)

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Derek Jensen // Wikimedia Commons

#41. Madison County

- Average temperature, Dec. 2021-Nov. 2022: 52.8 degrees Fahrenheit (1.9 F above 1901-2000 average)
- #16 warmest year since 1895
- Recent average low: 42.4 F (2 F above century average)
- Recent average high: 63.2 F (1.8 F above century average)

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Bwsmith84 // Wikimedia Commons

#40. Fayette County

- Average temperature, Dec. 2021-Nov. 2022: 53.1 degrees Fahrenheit (1.9 F above 1901-2000 average)
- #14 warmest year since 1895
- Recent average low: 42.4 F (1.8 F above century average)
- Recent average high: 63.8 F (2 F above century average)

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Greg Hume // Wikimedia Commons

#39. Butler County

- Average temperature, Dec. 2021-Nov. 2022: 54.2 degrees Fahrenheit (1.9 F above 1901-2000 average)
- #14 warmest year since 1895
- Recent average low: 43.4 F (1.6 F above century average)
- Recent average high: 64.9 F (2.2 F above century average)

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Lugevas // Wikimedia Commons

#38. Wayne County

- Average temperature, Dec. 2021-Nov. 2022: 51.1 degrees Fahrenheit (2 F above 1901-2000 average)
- #15 warmest year since 1895
- Recent average low: 41 F (2.3 F above century average)
- Recent average high: 61.1 F (1.8 F above century average)

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Cindy Funk // Wikicommons

#37. Clark County

- Average temperature, Dec. 2021-Nov. 2022: 52.8 degrees Fahrenheit (2 F above 1901-2000 average)
- #13 warmest year since 1895
- Recent average low: 42.8 F (2.2 F above century average)
- Recent average high: 62.9 F (1.9 F above century average)

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JNix // Shutterstock

#36. Clinton County

- Average temperature, Dec. 2021-Nov. 2022: 53.3 degrees Fahrenheit (2 F above 1901-2000 average)
- #16 warmest year since 1895
- Recent average low: 42.6 F (1.6 F above century average)
- Recent average high: 64 F (2.3 F above century average)

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Canva

#35. Hamilton County

- Average temperature, Dec. 2021-Nov. 2022: 55.2 degrees Fahrenheit (2 F above 1901-2000 average)
- #13 warmest year since 1895
- Recent average low: 44.5 F (1.7 F above century average)
- Recent average high: 65.8 F (2.3 F above century average)

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Christopher L. Riley // Wikimedia Commons

#34. Williams County

- Average temperature, Dec. 2021-Nov. 2022: 50.5 degrees Fahrenheit (2.1 F above 1901-2000 average)
- #20 warmest year since 1895
- Recent average low: 40.6 F (2.2 F above century average)
- Recent average high: 60.4 F (1.9 F above century average)

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Nyttend // Wikimedia Commons

#33. Carroll County

- Average temperature, Dec. 2021-Nov. 2022: 51.3 degrees Fahrenheit (2.1 F above 1901-2000 average)
- #16 warmest year since 1895
- Recent average low: 41.2 F (2.6 F above century average)
- Recent average high: 61.3 F (1.5 F above century average)

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Nyttend // Wikimedia Commons

#32. Defiance County

- Average temperature, Dec. 2021-Nov. 2022: 51.4 degrees Fahrenheit (2.1 F above 1901-2000 average)
- #20 warmest year since 1895
- Recent average low: 41.4 F (2.1 F above century average)
- Recent average high: 61.4 F (2 F above century average)

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w:User:Malepheasant // Wikimedia Commons

#31. Tuscarawas County

- Average temperature, Dec. 2021-Nov. 2022: 51.9 degrees Fahrenheit (2.1 F above 1901-2000 average)
- #14 warmest year since 1895
- Recent average low: 41.4 F (2.7 F above century average)
- Recent average high: 62.4 F (1.5 F above century average)

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User:OHWiki // Wikimedia Commons

#30. Sandusky County

- Average temperature, Dec. 2021-Nov. 2022: 52.2 degrees Fahrenheit (2.1 F above 1901-2000 average)
- #14 warmest year since 1895
- Recent average low: 42.7 F (1.9 F above century average)
- Recent average high: 61.7 F (2.2 F above century average)

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Nyttend // Wikimedia Commons

#29. Darke County

- Average temperature, Dec. 2021-Nov. 2022: 52.3 degrees Fahrenheit (2.1 F above 1901-2000 average)
- #14 warmest year since 1895
- Recent average low: 41.9 F (2 F above century average)
- Recent average high: 62.8 F (2.2 F above century average)

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Jack Pearce // Wikimedia Commons

#28. Mahoning County

- Average temperature, Dec. 2021-Nov. 2022: 50.4 degrees Fahrenheit (2.2 F above 1901-2000 average)
- #15 warmest year since 1895
- Recent average low: 39.4 F (1.8 F above century average)
- Recent average high: 61.3 F (2.7 F above century average)

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John Siegenthaler // Wikimedia Commons

#27. Richland County

- Average temperature, Dec. 2021-Nov. 2022: 50.6 degrees Fahrenheit (2.2 F above 1901-2000 average)
- #11 warmest year since 1895
- Recent average low: 40.5 F (2.7 F above century average)
- Recent average high: 60.7 F (1.7 F above century average)

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Ndutro // Wikimedia Commons

#26. Seneca County

- Average temperature, Dec. 2021-Nov. 2022: 51.9 degrees Fahrenheit (2.2 F above 1901-2000 average)
- #11 warmest year since 1895
- Recent average low: 42 F (2.2 F above century average)
- Recent average high: 61.7 F (2.2 F above century average)

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Derek Jensen // Wikimedia Commons

#25. Allen County

- Average temperature, Dec. 2021-Nov. 2022: 52.2 degrees Fahrenheit (2.2 F above 1901-2000 average)
- #15 warmest year since 1895
- Recent average low: 42.3 F (2.2 F above century average)
- Recent average high: 62.1 F (2.2 F above century average)

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James St. John // Wikimedia Commons

#24. Marion County

- Average temperature, Dec. 2021-Nov. 2022: 52.2 degrees Fahrenheit (2.2 F above 1901-2000 average)
- #11 warmest year since 1895
- Recent average low: 42.3 F (2.7 F above century average)
- Recent average high: 62.1 F (1.7 F above century average)

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Nyttend // Wikimedia Commons

#23. Warren County

- Average temperature, Dec. 2021-Nov. 2022: 54.5 degrees Fahrenheit (2.2 F above 1901-2000 average)
- #12 warmest year since 1895
- Recent average low: 43.9 F (2 F above century average)
- Recent average high: 65 F (2.5 F above century average)

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Brenda // Wikimedia Commons

#22. Medina County

- Average temperature, Dec. 2021-Nov. 2022: 51.4 degrees Fahrenheit (2.3 F above 1901-2000 average)
- #13 warmest year since 1895
- Recent average low: 41.8 F (2.1 F above century average)
- Recent average high: 61 F (2.5 F above century average)

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Art Anderson // Wikimedia Commons

#21. Putnam County

- Average temperature, Dec. 2021-Nov. 2022: 52.2 degrees Fahrenheit (2.3 F above 1901-2000 average)
- #12 warmest year since 1895
- Recent average low: 42.3 F (2.3 F above century average)
- Recent average high: 62.1 F (2.3 F above century average)

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LeeG7144 // Wikimedia Commons

#20. Ottawa County

- Average temperature, Dec. 2021-Nov. 2022: 52.5 degrees Fahrenheit (2.3 F above 1901-2000 average)
- #10 warmest year since 1895
- Recent average low: 43.4 F (2.1 F above century average)
- Recent average high: 61.5 F (2.6 F above century average)

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Ken Ratcliff // Wikimedia Commons

#19. Greene County

- Average temperature, Dec. 2021-Nov. 2022: 53.7 degrees Fahrenheit (2.3 F above 1901-2000 average)
- #12 warmest year since 1895
- Recent average low: 43.6 F (2.4 F above century average)
- Recent average high: 63.7 F (2.2 F above century average)

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Darren56brown // Wikimedia Commons

#18. Fulton County

- Average temperature, Dec. 2021-Nov. 2022: 51.2 degrees Fahrenheit (2.4 F above 1901-2000 average)
- #14 warmest year since 1895
- Recent average low: 41.2 F (2.2 F above century average)
- Recent average high: 61.2 F (2.5 F above century average)

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User:OHWiki // Wikimedia Commons

#17. Crawford County

- Average temperature, Dec. 2021-Nov. 2022: 51.4 degrees Fahrenheit (2.4 F above 1901-2000 average)
- #11 warmest year since 1895
- Recent average low: 41.4 F (2.8 F above century average)
- Recent average high: 61.4 F (2 F above century average)

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Art Anderson // Wikimedia Commons

#16. Henry County

- Average temperature, Dec. 2021-Nov. 2022: 51.9 degrees Fahrenheit (2.4 F above 1901-2000 average)
- #11 warmest year since 1895
- Recent average low: 42 F (2.5 F above century average)
- Recent average high: 61.7 F (2.2 F above century average)

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Jack W. Pearce // Wikimedia Commons

#15. Trumbull County

- Average temperature, Dec. 2021-Nov. 2022: 50.2 degrees Fahrenheit (2.5 F above 1901-2000 average)
- #12 warmest year since 1895
- Recent average low: 39.3 F (2 F above century average)
- Recent average high: 61.1 F (3 F above century average)

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Derek Jensen // Wikimedia Commons

#14. Miami County

- Average temperature, Dec. 2021-Nov. 2022: 53.4 degrees Fahrenheit (2.5 F above 1901-2000 average)
- #10 warmest year since 1895
- Recent average low: 43.2 F (2.4 F above century average)
- Recent average high: 63.6 F (2.4 F above century average)

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Tysto // Wikimedia Commons

#13. Montgomery County

- Average temperature, Dec. 2021-Nov. 2022: 54.2 degrees Fahrenheit (2.5 F above 1901-2000 average)
- #10 warmest year since 1895
- Recent average low: 43.9 F (2.5 F above century average)
- Recent average high: 64.5 F (2.6 F above century average)

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OZinOH // Wikimedia Commons

#12. Ashtabula County

- Average temperature, Dec. 2021-Nov. 2022: 50.1 degrees Fahrenheit (2.7 F above 1901-2000 average)
- #10 warmest year since 1895
- Recent average low: 40.3 F (2.4 F above century average)
- Recent average high: 59.9 F (2.9 F above century average)

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Art Anderson // Wikimedia Commons

#11. Wood County

- Average temperature, Dec. 2021-Nov. 2022: 52.6 degrees Fahrenheit (2.7 F above 1901-2000 average)
- #10 warmest year since 1895
- Recent average low: 42.9 F (2.9 F above century average)
- Recent average high: 62.3 F (2.5 F above century average)

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Andre Carrotflower // Wikimedia Commons

#10. Geauga County

- Average temperature, Dec. 2021-Nov. 2022: 50 degrees Fahrenheit (2.8 F above 1901-2000 average)
- #10 warmest year since 1895
- Recent average low: 40.2 F (2.4 F above century average)
- Recent average high: 59.9 F (3.2 F above century average)

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Canva

#9. Cuyahoga County

- Average temperature, Dec. 2021-Nov. 2022: 52 degrees Fahrenheit (2.8 F above 1901-2000 average)
- #11 warmest year since 1895
- Recent average low: 43.2 F (2.4 F above century average)
- Recent average high: 60.8 F (3.1 F above century average)

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Christopher L. Riley // Wikimedia Commons

#8. Hardin County

- Average temperature, Dec. 2021-Nov. 2022: 52.6 degrees Fahrenheit (2.8 F above 1901-2000 average)
- #9 warmest year since 1895
- Recent average low: 43 F (3.2 F above century average)
- Recent average high: 62.3 F (2.5 F above century average)

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Ruhrfisch // Wikimedia Commons

#7. Hancock County

- Average temperature, Dec. 2021-Nov. 2022: 52.7 degrees Fahrenheit (2.9 F above 1901-2000 average)
- #10 warmest year since 1895
- Recent average low: 43 F (3.2 F above century average)
- Recent average high: 62.4 F (2.7 F above century average)

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Pdepalma // Wikimedia Commons

#6. Lake County

- Average temperature, Dec. 2021-Nov. 2022: 51.4 degrees Fahrenheit (3 F above 1901-2000 average)
- #10 warmest year since 1895
- Recent average low: 42.6 F (2.7 F above century average)
- Recent average high: 60.3 F (3.3 F above century average)

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User:OHWiki // Wikimedia Commons

#5. Wyandot County

- Average temperature, Dec. 2021-Nov. 2022: 52.8 degrees Fahrenheit (3 F above 1901-2000 average)
- #9 warmest year since 1895
- Recent average low: 43 F (3.3 F above century average)
- Recent average high: 62.7 F (2.7 F above century average)

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JonRidinger // Wikimedia Commons

#4. Portage County

- Average temperature, Dec. 2021-Nov. 2022: 51 degrees Fahrenheit (3.1 F above 1901-2000 average)
- #10 warmest year since 1895
- Recent average low: 40.7 F (2.6 F above century average)
- Recent average high: 61.3 F (3.5 F above century average)

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Michael Shake // Shutterstock

#3. Lucas County

- Average temperature, Dec. 2021-Nov. 2022: 52.8 degrees Fahrenheit (3.1 F above 1901-2000 average)
- #9 warmest year since 1895
- Recent average low: 43.3 F (3 F above century average)
- Recent average high: 62.4 F (3.2 F above century average)

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Alycat // Wikimedia Commons

#2. Stark County

- Average temperature, Dec. 2021-Nov. 2022: 52 degrees Fahrenheit (3.2 F above 1901-2000 average)
- #9 warmest year since 1895
- Recent average low: 41.9 F (3.3 F above century average)
- Recent average high: 62 F (3 F above century average)

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Sleepydre // Wikicommons

#1. Summit County

- Average temperature, Dec. 2021-Nov. 2022: 52.4 degrees Fahrenheit (3.4 F above 1901-2000 average)
- #8 warmest year since 1895
- Recent average low: 42.7 F (3.1 F above century average)
- Recent average high: 62 F (3.7 F above century average)

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