Temperatures are forecast to plummet into the 50s Friday morning after July-like days Wednesday and Thursday.
The National Weather Service in Miami forecast 89 degrees for Palm Beach International Airport before the Friday cool-down.
The weather will be only slightly cooler for coastal Palm Beach, which is expected to see highs of 86 Wednesday and Thursday as a breezy south wind pulls moist tropical air into South Florida.
On Tuesday, an overnight heat record was tied in Fort Lauderdale when temperatures dipped to just 76 degrees. In West Palm Beach, the morning low Tuesday dipped to 73 degrees. That’s nine degrees above normal, but not a record-breaker.
“Right now, we’re not forecasting anything for Palm Beach to be broken,” said NWS meteorologist Larry Kelly about record highs and lows. “But that can always change depending on the timing of the front.”
A low pressure system expected to incite severe weather in the southeast Wednesday will begin to shift winds to the southwest throughout the day Thursday as its counter-clockwise swirl lifts northeast through the Ohio Valley.
While Thursday is again expected to be 5 to 10 degrees above normal for this time of year, it will begin to cool down after the front passes with lows overnight Thursday dipping to the low 60s in Palm Beach and 50s inland.
The normal high temperature for early April is 80 degrees, with a normal overnight low of 65 degrees.
“On Thursday, the front will push through South Florida, which will enhance a few showers and storms during the day,” forecasters wrote in a discussion Wednesday. “East coast urban areas should see Thursday as the warmest day, when southwesterly winds could boos temperatures a few degrees before the cold front crosses.”
Winds will shift to the northwest Thursday afternoon and continue into Friday, pulling down cold northern air, which is a mix of Rocky Mountain coolness and Canadian chill.
President Donald Trump may arrive Thursday at the same time as the showers ahead of the cold front. Trump is scheduled to arrive at Palm Beach International Airport sometime after 2 p.m., when a FAA temporary flight restriction goes into effect.
That’s also when rain chances jump to near 50 percent and the strongest winds will be gusting to more than 20 mph.
But the rain is expected to make a quick entrance and exit, with “abundant” dry air behind it that will linger through the weekend.
Trump, and Chinese President Xi Jinping, should have a pleasant weekend with low relative humidity and high temperatures Saturday and Sunday in the low 70s.