South Florida has been on a six-day streak of 90-degree days or warmer with two days this week reaching a sizzling 93 degrees at Palm Beach International Airport.
The normal daytime high for this time of year is 88 degrees, with overnight lows at 75.
Wednesday and Thursday both hit 93 – not enough to break records which were 94 degrees on both days, but 5 degrees above normal.
Nine days this month have been 90 degrees or warmer.
That’s more like what’s typical in late July through August.
Robert Garcia, a meteorologist with the National Weather Service in Miami, said the warm temperatures are partly because the Bermuda High has had a strong grip on Florida.
High pressure leads to sunny skies and warmer temperatures as air sinks and warms compressionally as it does so.
But, there’s also an upper-level area of low pressure.
The two have turned off the typical sea breezes that can cool the air in the afternoon and help kick up thunderstorms.
The storms that have come in have been more pop-up in nature, including a strong one that hit Broward County on Thursday that included quarter-size hail, according to the NWS.
“It’s a weird pattern,” Garcia said. “The flow has just been stagnant compared to a normal summer breeze.
That could end today with an increase in chances for thunderstorms.
“These storms could be really slow moving so we could see some areas of ponding where the rain is heavy,” Garcia said.
Saturday is the first day of fall as the equinox marks the Earth begins to tilt the Northern Hemisphere toward autumn.
At the moment of equinox, the Earth’s axis leans neither toward or away from the sun — a parity that produces a nearly equal day and night.
But Garcia said don’t expect any significant dip in temperatures.
While North Florida may experience a cold front in September, they typically don’t push south until at least mid October after the onset of the rainy season, which begins Oct. 15.
“I think we’re still very much in the rainy season for now,” Garcia said.