New York City experienced a historic heatwave on April 15, 2026, shattering an 85-year-old temperature record. The mercury soared to 90°F (32°C), surpassing the previous high of 87°F (31°C) set in 1941. This uncharacteristic warmth for mid-April is the result of a robust ridge of high pressure dominating the eastern United States, effectively preventing cooler air masses from entering the region. AccuWeather meteorologists are closely tracking the event, emphasizing the unusual nature of the heat so early in the season. While the warm weather is ideal for many outdoor pursuits, AccuWeather cautions against water activities, as the water temperatures remain significantly colder, posing a risk to swimmers.