Jacksonville, FL – Heavy afternoon thunderstorms and dangerous heat will grip Jacksonville through Thursday night, with heat index values soaring to 105° and an 80% chance of storms bringing flooding concerns and possible power outages. Residents can expect showers to develop each day, peaking late afternoon and evening as tropical humidity fuels frequent downpours, strong gusts, and lightning.
According to the National Weather Service, the most intense storms are expected after 4 p.m. Monday, with additional rounds possible each afternoon and evening through Thursday. Rainfall could exceed an inch in some neighborhoods, leading to localized street flooding—especially in low-lying areas. Winds will be light but may shift with storms, increasing the risk of downed branches or brief outages.
Monday: Afternoon storms, heat index near 105°, new rainfall up to a half inch.
Tuesday: Thunderstorms return after 2 p.m.; more heavy rain and lightning possible, muggy lows in the mid-70s.
Wednesday: Morning and afternoon showers, high around 91°, continued threat of severe weather.
Thursday: Storms likely after 8 a.m.; humid, hot, with more heavy rainfall.
Friday: Showers tapering, still a chance of thunder, highs in the upper 80s.
Residents should avoid flooded roads, secure outdoor items, and keep mobile devices charged in case of power outages. The storm pattern is likely to persist into the weekend, so stay tuned for further updates and possible new alerts.
Five Day Forecast for Jacksonville, FL:
- Monday: High 92°, afternoon thunderstorms, muggy night near 76°.
- Tuesday: High 93°, scattered storms, humid overnight.
- Wednesday: High 91°, frequent showers, low 76°.
- Thursday: High 88°, thunderstorms likely, lingering storms overnight.
- Friday: High 89°, showers fading, still a thunder risk, low near 76°.
