Jacksonville, Fla. – Sweltering heat and a line of afternoon thunderstorms will create hazardous travel and outdoor conditions in Jacksonville on Tuesday, July 15. Heat index values will soar to 105° as showers and potentially severe thunderstorms roll into the city and surrounding highways—including I-95 and I-10—shortly after 11 a.m. Residents should avoid non-essential travel, especially during peak storm hours.
According to the National Weather Service, Tuesday’s storms are likely after 11 a.m., with gusty winds up to 19 mph possible. Dangerous conditions may continue through the evening, bringing sudden downpours and lightning. Motorists should watch for slick spots and reduced visibility, especially on major corridors like I-95, I-10, and Atlantic Boulevard. Prepare by charging mobile devices, securing outdoor items, and reviewing local emergency alerts.
Jacksonville’s heat index will push past 100° for most of the afternoon, making heat illness a concern for outdoor workers and vulnerable residents. Hydrate frequently, check on neighbors, and use air conditioning if possible. The storm risk will taper by late evening, with only slight shower chances into the night.
Wednesday brings continued unsettled weather, as more storms develop by afternoon. Highs remain near 91°, and the threat of strong storms stays elevated through Thursday, with rain chances above 70% each day. By Friday, summer heat builds again—expect highs near 93° with scattered afternoon storms.
Looking ahead, the weekend (Saturday, July 19) holds a chance for scattered showers, but periods of sunshine are expected. Highs will reach the lower 90s. Sunday appears warm and stormy, with a 70% chance of thunderstorms and a high of 94°. Next week begins with more heat and humidity as Florida’s classic summer pattern holds.
Warnings remain in effect through Friday, with updates possible as storms develop. Monitor NWS advisories for the latest on road closures and safety alerts.
Five Day Forecast:
- Tuesday: Chance of showers, thunderstorms likely after 11 a.m., high near 90°, heat index up to 105°
- Wednesday: Showers and storms likely by afternoon, high 91°
- Thursday: Thunderstorms, muggy, high near 92°
- Friday: Partly sunny, afternoon storms, high 93°
- Saturday: 50% chance of showers and storms, high near 90°
- Sunday: Thunderstorms likely, high 94°
