#8. Fairfield County

- Winter 2024 average temperature: 35.9 degrees Fahrenheit
- Historic average summer temperature: 28.4 degrees
-- 2024 difference from historic average: +7.5 degrees

#7. New London County

- Winter 2024 average temperature: 35.8 degrees Fahrenheit
- Historic average summer temperature: 28.5 degrees
-- 2024 difference from historic average: +7.3 degrees

#6. Middlesex County

- Winter 2024 average temperature: 35.3 degrees Fahrenheit
- Historic average summer temperature: 28.3 degrees
-- 2024 difference from historic average: +7 degrees

#5. New Haven County

- Winter 2024 average temperature: 34.9 degrees Fahrenheit
- Historic average summer temperature: 28.1 degrees
-- 2024 difference from historic average: +6.8 degrees

#4. Hartford County

- Winter 2024 average temperature: 34.3 degrees Fahrenheit
- Historic average summer temperature: 26.7 degrees
-- 2024 difference from historic average: +7.6 degrees

#3. Windham County

- Winter 2024 average temperature: 34.0 degrees Fahrenheit
- Historic average summer temperature: 26.6 degrees
-- 2024 difference from historic average: +7.4 degrees

#2. Tolland County

- Winter 2024 average temperature: 33.7 degrees Fahrenheit
- Historic average summer temperature: 26.2 degrees
-- 2024 difference from historic average: +7.5 degrees

#1. Litchfield County

- Winter 2024 average temperature: 32.2 degrees Fahrenheit
- Historic average summer temperature: 24.4 degrees
-- 2024 difference from historic average: +7.8 degrees

This story features data reporting by Wade Zhou, writing by Andrea Vale, and is part of a series utilizing data automation across 48 states.