Counties with the warmest summers in Illinois

Written by:
May 23, 2023
Maxim Grohotov // Shutterstock

Counties with the warmest summers in Illinois

It's almost summer, and the weather is starting to heat up.

With this in mind, Stacker compiled a list of the counties with the warmest summers in Illinois using data from the National Centers for Environmental Information. Data represents the average temperatures from June to August 2022; the historic average is the average for these months from 1901 to 2000.

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#25. Williamson County

- Summer 2022 average temperature: 77 degrees
- Historic average summer temperature: 76 degrees
-- 2022 difference from historic average: 1.1 degrees
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#24. Edwards County

- Summer 2022 average temperature: 77 degrees
- Historic average summer temperature: 76 degrees
-- 2022 difference from historic average: 1.1 degrees
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#23. Calhoun County

- Summer 2022 average temperature: 77 degrees
- Historic average summer temperature: 75 degrees
-- 2022 difference from historic average: 1.3 degrees
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#22. Clinton County

- Summer 2022 average temperature: 77 degrees
- Historic average summer temperature: 76 degrees
-- 2022 difference from historic average: 1.0 degrees
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#21. Madison County

- Summer 2022 average temperature: 77 degrees
- Historic average summer temperature: 76 degrees
-- 2022 difference from historic average: 0.9 degrees
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#20. Jefferson County

- Summer 2022 average temperature: 77 degrees
- Historic average summer temperature: 76 degrees
-- 2022 difference from historic average: 1.2 degrees
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#19. Franklin County

- Summer 2022 average temperature: 77 degrees
- Historic average summer temperature: 76 degrees
-- 2022 difference from historic average: 1.1 degrees
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#18. Perry County

- Summer 2022 average temperature: 77 degrees
- Historic average summer temperature: 76 degrees
-- 2022 difference from historic average: 1.2 degrees
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#17. Jersey County

- Summer 2022 average temperature: 77 degrees
- Historic average summer temperature: 76 degrees
-- 2022 difference from historic average: 1.4 degrees
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#16. Wayne County

- Summer 2022 average temperature: 77 degrees
- Historic average summer temperature: 75 degrees
-- 2022 difference from historic average: 1.5 degrees
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#15. Jackson County

- Summer 2022 average temperature: 77 degrees
- Historic average summer temperature: 76 degrees
-- 2022 difference from historic average: 1.3 degrees
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#14. Hamilton County

- Summer 2022 average temperature: 77 degrees
- Historic average summer temperature: 76 degrees
-- 2022 difference from historic average: 1.3 degrees
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#13. St. Clair County

- Summer 2022 average temperature: 77 degrees
- Historic average summer temperature: 76 degrees
-- 2022 difference from historic average: 0.9 degrees
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#12. Saline County

- Summer 2022 average temperature: 77 degrees
- Historic average summer temperature: 76 degrees
-- 2022 difference from historic average: 1.1 degrees
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#11. Johnson County

- Summer 2022 average temperature: 77 degrees
- Historic average summer temperature: 76 degrees
-- 2022 difference from historic average: 1.3 degrees
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#10. Randolph County

- Summer 2022 average temperature: 77 degrees
- Historic average summer temperature: 76 degrees
-- 2022 difference from historic average: 1.4 degrees
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#9. Union County

- Summer 2022 average temperature: 77 degrees
- Historic average summer temperature: 76 degrees
-- 2022 difference from historic average: 1.5 degrees
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#8. White County

- Summer 2022 average temperature: 77 degrees
- Historic average summer temperature: 76 degrees
-- 2022 difference from historic average: 1.3 degrees
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#7. Pope County

- Summer 2022 average temperature: 77 degrees
- Historic average summer temperature: 76 degrees
-- 2022 difference from historic average: 1.2 degrees
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#6. Gallatin County

- Summer 2022 average temperature: 78 degrees
- Historic average summer temperature: 77 degrees
-- 2022 difference from historic average: 1.2 degrees
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#5. Hardin County

- Summer 2022 average temperature: 78 degrees
- Historic average summer temperature: 76 degrees
-- 2022 difference from historic average: 1.5 degrees
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#4. Monroe County

- Summer 2022 average temperature: 78 degrees
- Historic average summer temperature: 76 degrees
-- 2022 difference from historic average: 1.6 degrees
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#3. Massac County

- Summer 2022 average temperature: 78 degrees
- Historic average summer temperature: 77 degrees
-- 2022 difference from historic average: 1.5 degrees
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#2. Pulaski County

- Summer 2022 average temperature: 78 degrees
- Historic average summer temperature: 77 degrees
-- 2022 difference from historic average: 1.7 degrees
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#1. Alexander County

- Summer 2022 average temperature: 78 degrees
- Historic average summer temperature: 77 degrees
-- 2022 difference from historic average: 1.7 degrees
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