South Florida is bracing for a significant surge in temperatures this weekend, with conditions expected to feel more like the peak of summer. Miami-Dade, Broward, and Monroe counties will experience higher-than-usual temperatures, prompting local authorities to issue advisories. The National Weather Service forecasts daytime temperatures in the low to mid-90s, with a heat index potentially soaring to 100-105 degrees Fahrenheit. Such conditions pose a risk of heat-related illnesses, especially for those outdoors or with underlying health conditions.