A cold front with much colder air behind it begins its move into Florida on Sunday, reaching South Florida by Monday morning.
While the front is significantly weaker on the southern stream than the northern half, it's not weaker when it comes to the colder air behind the front itself.
Temperatures ahead of the front are well into the 70s and 80s, while behind the front, cities are finding a drop of nearly 20 plus degrees each day.
On Sunday, South Florida will enjoy some significantly sunny skies with a nice southerly wind. This will allow our highs to soar into the low to mid-80s. But by Sunday night, the front will begin its approach to South Florida and winds will begin to shift out of the southwest. Overnight lows will fall into the mid-60s. The front will begin to move into the Treasure Coast by 3 a.m.
A few rain showers are likely with this front. Showers shouldn't be heavy, and thunderstorms are unlikely. Showers should move through the entire region, from Treasure Coast to south of Palm Beach County, between 3:30 a.m. to 9:00 a.m. After 9, sunny skies with breezy and windy conditions. We'll notice winds increasing to 15 to 20 mph throughout the remainder of the day on Monday. Highs in the mid-70s.
The cold air will finally reach us Monday night into Tuesday morning. Many cities and communities will wake up in the low to mid-40s Tuesday morning. Despite a large amount of winter sunshine, highs will only reach into the mid-60s Tuesday.