The first Sunday of August on Key Biscayne brings a morning mix of sun and clouds, with scattered thunderstorms possible later this afternoon. The high will be around 88 degrees, with SSE winds at 5 to 10 mph. Chance of rain: 40%.

Tonight, mostly cloudy with a low of 81 degrees.

Monday, mostly cloudy early, with typical summer thunderstorms developing during the afternoon. The high will be near 88 degrees, with south winds at 10 to 15 mph. Chance of rain: 50%.

For hour-by-hour Key Biscayne weather updates and local radar, click here.