Cold front could bring lowest temps since March to South Florida this weekend

South Florida is about to get a welcome taste of fall. A strong cold front will sweep through late this week, opening the door to cooler, drier air arriving from the northern Rockies and northern Plains.

That air will warm along its journey south, but it will still bring a noticeable change: lower humidity, breezy conditions and mornings that may finally call for a light jacket and even those boots deep in the closet.

Our Saturday morning forecast calls for 59 degrees at Miami International Airport, 57 at Fort Lauderdale-Hollywood International Airport and 68 at Key West International Airport. If those forecasts verify, each airport would experience temperatures that cool or cooler for the first time since March. Miami last reached 59 degrees on March 22, Fort Lauderdale last recorded 57 degrees on March 18, and Key West last dipped to 68 degrees on March 24.

For perspective, Miami’s normal low for mid-November is about 68 degrees, putting our forecast of 59 a full nine degrees below normal.

The pleasant change will extend beyond the early mornings, with afternoon highs forecast to stay in the 70s Friday through the weekend and into early next week. Combined with the lower humidity, that should make for a refreshing break from our recent warmth.

Enjoy the crisp mornings while they last. Morning temperatures will snap back upward by Monday as winds bring milder Atlantic air back into South Florida. That ocean influence will take the edge off the early chill, even as afternoon temperatures remain comfortable in the 70s.