Climate Extremes Index in the United States 2023, by region

In 2023, the eastern United States climate was, on average, the most abnormal across the North American country, with roughly 40 to 60 percent of the region having extreme climate conditions throughout the year. The Extreme Climate Index is an indicator of the percentage of land that experienced far from average conditions for a given time of the year, such as much warmer or colder daily maximum temperatures or much fewer days without rain.

于2023年，美国东部地区的气候平均而言，在整个北美范围内呈现出最为异常的现象，其中大约40%至60%的区域全年均处于极端气候条件下。极端气候指数是衡量一定时期内土地经历远离常态气候条件（如日最高温度显著偏高或偏低，或无雨天数显著减少）所占百分比的一个指标。