South Florida has been trapped under a high pressure system all month that pushed daytime temperatures past 90 degrees and cut off rain to the coast, but that may be about to change.
National Weather Service forecasters in Miami said this morning that a surge of tropical moisture is expected to move into South Florida early next week that could bring more widespread showers and scattered thunderstorms Monday and Tuesday.
That means that while today is still expected to be a scorching 92 degrees, with a heat index of up to 105, temperatures could start to get back to normal by Monday. The normal high for this time of year is 90 degrees. Monday and Tuesday are forecast to reach 89 degrees.
“We’ll see a little more shower coverage in the morning,” said Barry Baxter, a meteorologist with the National Weather Service in Miami. “It’s been drier than normal and last week we had some Saharan dust over us.”
Coastal Palm Beach County has a rain deficit for the month of 1.15 inches. For the season, which includes June, the coast is down 2.77 inches of rain.
Aside from the abnormal daytime highs, there’s been less of a cool down overnight with temperatures dipping only to the low 80s. That’s a function of the easterly breezes blowing in warm air off the water.
At 7 a.m. this morning, the temperature was 83 degrees with a relative humidity of 70 percent.
“It may be getting down to 78 next week,” Baxter said. “The humidity makes it feel worse.”
For Saturday, the high will be in the low to mid-90s with a 50 percent chance of showers mostly inland.
Sunday will see a high near 90 with a 30 percent chance of rain.
Baxter said there was a hint that there may be some cooler temperatures with a front sweeping away the high pressure system next week, but that hope faded in recent days.
“It’s stalling over the southeast now,” Baxter said.
There is a concern of a moderate risk of rip currents on Palm Beach County’s beaches this weekend with southeast winds picking up slightly Saturday and Sunday.