How Summer Temperatures Have Changed Across the United States
Interactive map created for the AARP website, allowing readers to explore how average summer temperatures have changed over time across every U.S. state and county.
Client: AARP, June 2026
U.S. Summer Temperature, 1970–2025
Hottest state
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Coolest state
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Largest warming
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Color scale — actual °F
Cooler
Hotter
1970
NOAA State Climate Division Data · Departure from each state’s 1970 summer average · Hawaii baseline = 1991