Excessive Heat Warning for STL through Monday

Lightning safety

Skies will remain mostly sunny throughout the day, much like yesterday, and we will also keep around the heat. Highs will be near 27°C, and the higher humidity will make it feel muggy and more like 33°C. Take extra precautions to stay cool in shady areas and look out for those most vulnerable to heat. This should prompt a few afternoon and evening storms, with a greater chance of widespread rains on Wednesday.

Following a warm Father's Day with temps in the 80s and upper 90s, temperatures for Monday are expected to rise into the upper 90s.

A few lingering showers will stick around Sunday night into Monday morning.

Heat Advisory: Noon to 8 p.m. Sunday.

Saturday: Partly sunny and HOT, heat index near 100. This combination of high heat and humidity may cause heat stress during outdoor exertion or extended exposure.

Also, a front will drop in from the north on Monday afternoon, potentially producing thunderstorms with gusty winds, hail and heavy rain.

Parts of the Northeast will also get quite warm, with heat index values in the upper 90s in NY and Philadelphia.

A heat advisory has been issued ahead of Monday's potentially unsafe heat. Therefore your Saturday wasn't too bad, with temperatures approaching 90 degrees. Heat index between 100 to 105. This year, however, the weather service has dropped that threshold to 95 degrees.

"The handsome weather for the past several days was courtesy of a strong Canadian high pressure system pumping in very dry air", Ritter said.

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