Miami Ties All-Time High Temperature Record at 100°F
Miami experienced a historic heatwave this week, with temperatures reaching 100°F (37.8°C) on Tuesday, August 18, 2026. This ties the city's all-time high temperature record, previously set on July 21, 1942, according to the National Weather Service. The extreme heat was exacerbated by westward winds that prevented the usual cooling ocean breeze along the coastline. The heat index, or 'feels-like' temperature, soared well above 100°F, prompting health officials to issue warnings. The Miami heat advisory ended at 7 p.m. Tuesday, with slightly cooler temperatures forecast for the following day.