Cold front: When Palm Beach County will feel the chill

A cold front moving through this week will push temperatures as much as 10 degrees below normal early Thursday with West Palm Beach waking up to a forecast 60 degrees.

In the western reaches of Palm Beach County, temperatures are more likely to dip into the 50s overnight Wednesday into Thursday morning.

Forecasters at the National Weather Service in Miami said the front has slowed down a little and won’t make it through the tip of the peninsula until Wednesday.

Behind it,  will be a “brief period of autumn” that will begin Wednesday night and continue through Friday.

Forecast for West Palm Beach, NWS Miami

The normal overnight low temperature in West Palm Beach for this time of year is 70 degrees. The normal daytime high is 83 degrees.

“It’s not going to be an arctic blast by any stretch of the imagination,” said Chris Fisher, a meteorologist with the NWS in Miami. “But we will be a little below normal and it seems like people are fairly excited.”

The period of July through September was the second- warmest on record for southeast Florida, with the average temperature of 83.5 degrees running 2.4 degrees above normal, according to the National Centers for Environmental Information.

This map shows the cold front pushing through South Florida at 8 a.m. Wednesday. Behind it will be the coolest air of the season so far.

October’s average temperature at PBIA has run about 2.4 degrees above normal.

The jolt of cold is courtesy of a revved-up jet stream that will dive deep into the southern U.S. with a low-pressure system expected to sweep toward the northeast. The trailing cold front will drop temperatures from Maine to the Keys, ending a spate of sunny, mild days in the north.

The coldest temperatures this week are expected Thursday morning following the front moving through Wednesday. This map shows the temperatures at 2 a.m. Thursday.

Temperatures at 2 p.m. Thursday.

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