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U.S. Winters Warming: 98% of Cities See 3.9°F Rise

11/13/2025

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Summary

Story summary

North Carolina State University researchers analyzed hourly weather data from 1978 to 2023 to identify United States climate trends.
The northeastern states have lost nearly 1.5 weeks of freezing temperatures, while the Gulf and Southwest gained similar heat-stress durations.
Overall, winters are warming rapidly, and 98% of 244 U.S. cities have experienced a 3.9°F increase since 1970, affecting agriculture, health, and local economies.

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Story summary

North Carolina State University researchers analyzed hourly weather data from 1978 to 2023 to identify United States climate trends.
The northeastern states have lost nearly 1.5 weeks of freezing temperatures, while the Gulf and Southwest gained similar heat-stress durations.
Overall, winters are warming rapidly, and 98% of 244 U.S. cities have experienced a 3.9°F increase since 1970, affecting agriculture, health, and local economies.