Despite the calendar flipping to December, unseasonable warmth will dominate South Florida through Monday before cooler air arrives.

"It will be pretty toasty in central and South Florida," AccuWeather Senior Meteorologist Frank Strait said.

High temperatures in the middle 80s F from Orlando, Lakeland, Vero Beach, Miami and Key West will put some daily record highs in jeopardy into Monday.

While heat is no stranger to these areas, temperatures this high in early December are 5-10 degrees Fahrenheit above normal.

High humidity levels and sunshine will make it feel even steamier, with AccuWeather RealFeel® Temperatures approaching 90 F during the early to midafternoon hours.

While this will be great weather to head to the beach, people outside should be on the lookout for isolated thunderstorms that can pop up in the steamy air, and be prepared to take shelter at the first rumble of thunder.

The greatest concentration of thunderstorms into Monday will be across northern portions of the Sunshine State, where localized severe weather and flooding cannot be ruled out.

Download the free AccuWeather app to see how high temperatures will get in your area, as well as the arrival time of any thunderstorms.

Folks partaking in outdoor activities, especially those visiting from colder northern locations, should make sure they take proper precautions in the heat.

Wearing light-colored, loose-fitting clothing and drinking plenty of water are encouraged for anyone spending time in the sun.

A cold front will make southward progress and cool things down across the area by midweek, according to Strait.

Showers and thunderstorms will mark the transition to cooler weather.

While Strait said the coolest conditions will be felt across northern Florida, high temperatures will fall back into the 70s as far south as Miami and Key West, accompanied by much lower humidity.

The air will not be quite as chilly as what spilled over the area during the early and middle part of last week, when highs were held to the 50s in Orlando and 60s in Miami.

Still, those looking to give their air conditioners a break or put up holiday decorations with more ease will welcome the upcoming break from the heat.

Warmer, steamier weather may again surge back north next weekend when more thunderstorms may rumble.