There is a 40 percent chance for showers and thunderstorms in the afternoon.
The rain is expected mainly after 2 p.m., according to NWS Melbourne.
Locally heavy rainfall is possible thanks to slow-moving storms.
Skies will be mostly sunny with temperature highs peaking near 91 degrees.
Winds are calm, blowing east to southeast around 5 mph in the afternoon.
There is a moderate risk of life-threatening rip currents at all area beaches.
For Thursday night, skies will be partly cloudy with temperatures around 75 degrees, according to NWS Melbourne.
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Looking ahead, high temps are forecast from Friday into early next week.
Temperatures are expected to be in the low-to-mid 90s with maximum heat index values as high as 102-107 degrees.
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