Jacksonville, Florida – Jacksonville residents are in for a punishing stretch of heat and thunderstorms as a heat advisory remains in effect, with “feels like” temperatures soaring as high as 109°F and strong storms possible each afternoon through Monday. City crews and emergency responders urge caution as the region faces both extreme temperatures and the risk of flash flooding.
According to the National Weather Service, Friday’s high will hit 98°F with a heat index of 109°F. Thunderstorms could develop after 2 p.m., briefly dropping temperatures but bringing the risk of gusty winds and heavy downpours. The threat ramps up Saturday, when a 106°F heat index and 80% chance of afternoon storms could bring hazardous travel conditions, especially on I-95 and local roads in Duval, Clay, and St. Johns counties.
Weekend plans could be disrupted, with strong storms likely both days—expect scattered power outages and delays for local events. Those headed outdoors should hydrate frequently, seek shade, and limit strenuous activity during peak heat. Charge devices and have alternate cooling options ready in case of outages.
Sunday brings more widespread storms, with rain chances at 90%. Heat and thunderstorms will linger into early next week, so stay tuned for additional advisories.
Five Day Jacksonville Weather at a Glance:
- Friday: High 98°F, heat index 109°F. Slight chance of afternoon storms.
- Saturday: High 95°F, heat index 106°F. Thunderstorms likely, especially after 11 a.m.
- Sunday: High 90°F. Storms and showers, 90% chance of rain.
- Monday: High 90°F. Scattered thunderstorms, 80% chance.
- Tuesday: High near 92°F. Showers and storms, 80% chance.
