Jacksonville Braces for Fall Heatwave Nearing 100°F
• Jacksonville is bracing for a fall heatwave with temperatures expected to reach the 90s and a heat index of 100–105°F.
• The most intense heat is predicted midweek, with gradually increasing temperatures and humidity each day.
• Residents are urged to stay indoors, hydrated, and to recognize the signs of heat-related illnesses.
Jacksonville prepares for unseasonal heatwave this fall
Jacksonville is preparing for an unseasonal heatwave this fall, with temperatures expected to soar into the 90s. The heat index, which measures how hot it feels when humidity is combined with air temperature, is predicted to reach between 100 and 105 degrees Fahrenheit inland.
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