Jacksonville could feel like 103 degrees Monday before late-afternoon storms arrive. Rain chances rise sharply Tuesday and Wednesday.

Jacksonville heads toward 94 degrees Sunday with a heat index near 102. Storm chances rise sharply by Tuesday as a wetter pattern settles in.

Jacksonville starts Saturday sunny and warm before afternoon storms move in. Stronger cells could bring lightning, downpours and gusts up to 60 mph.

Jacksonville faces a heat index up to 112 degrees Thursday before afternoon thunderstorms bring lightning, flooding rain and dangerous wind gusts.

Jacksonville could feel up to 112 degrees Wednesday before afternoon storms roll in.

Jacksonville faces a 112-degree heat index Monday, followed by afternoon thunderstorms and another dangerous heat day Tuesday.

Jacksonville faces a Heat Advisory, a 110°F heat index and late-day thunderstorms Sunday. Dangerous heat continues into midweek.

Jacksonville faces a heat index near 112 Saturday, followed by afternoon thunderstorms and another stretch of near-100-degree days.

Jacksonville faces a Friday Heat Advisory, a heat index near 110 degrees and afternoon thunderstorms. Even hotter temperatures are expected early next week.

Jacksonville faces a Heat Advisory, a 111-degree heat index and afternoon storms Thursday. Another hot, stormy stretch is already lining up for the weekend.

A microscopic Gulf alga rarely seen this far north has state officials warning Jacksonville residents to watch for burning eyes and dead fish.

Jacksonville faces a Heat Advisory Wednesday, with a 95°F high, afternoon thunderstorms and possible strong wind gusts. Even hotter days are ahead.

Jacksonville’s heat index could hit 110 Tuesday as afternoon storms return. The dangerous heat pattern is expected to continue through the weekend.