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That cooler air won't stick around though; another big warmup begins Thursday and that could be the start of our 3rd heat wave of the year.—Tammie Souza, CBS News, 6 June 2026 Scientists estimate climate change will increase the strength of heat waves and severe storms across Europe.—ABC News, 4 June 2026 Last summer, some reported triple-digit increases in their electricity bills due to the supply rate costs and high demand during a heat wave.—Robert Channick, Chicago Tribune, 4 June 2026 While average summer temperatures in World Cup host cities generally remain lower than that, North American heat waves in recent years have led to triple-digit temperatures.—Rebecca Hersher, NPR, 4 June 2026 See All Example Sentences for heat wave