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Summer Nights are Getting Warmer Across the U.S.

By Climate Central

Summer nights are warming across the country. We often think about the increasing number of hot days as greenhouse gases build in the atmosphere and the climate warms, but we are also seeing a strong rise in overnight low temperatures. 

This was highlighted last month. According to NOAA, the U.S. June low temperature was the highest on record (back to 1895). The high temperature average for the month were also hotter than usual, but only came in as the 14th-highest on record. So the warm nights propelled the country to its second-warmest recorded June overall.

In the graphics above, we show that every state in the U.S. is experiencing an upward trend in summer low temperatures.

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