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‘Most oppressive’ heat so far to be felt in Lehigh Valley this weekend. When will it end?

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The heat and humidity this weekend will be “the most oppressive” conditions felt so far in the Lehigh Valley, forecasters say, as a heat wave continues.

High temperatures will be in the mid 90s Saturday and Sunday, with heat index values of more than 100 expected, according to the National Weather Service’s forecast discussion. Temperatures have reached the low 90s each day since Tuesday.

The Lehigh Valley remains under a heat advisory through Sunday night. It will also be under an excessive heat watch Sunday.

festival is scheduled for Saturday in Allentown. The event is held rain or shine.

The festival will have a fire truck mist cooling station on Seventh Street near the Lehigh County Government Center, and the PPL Center lobby will be open from 11 a.m. to 7 p.m. for those trying to cool down. The event runs from noon to 10 p.m.

The Lehigh Valley won’t get a reprieve from the heat after the weekend, with highs around 90 to start next week.

The weather service is expecting a high of 89 for Monday and Tuesday, and a high of 93 Wednesday. The heat should finally break Thursday, with high temperatures in the mid-80s, according to forecasters.

The weather service encourages people to drink plenty of fluids, stay in an air-conditioned room, stay out of the sun and check up on relatives and neighbors.

Outside of high temperatures, forecasters said there is a possibility of thunderstorms each day Friday through Monday. Here is the extended forecast from the National Weather Service:

Saturday: A chance of showers and thunderstorms after 2 p.m. Mostly sunny, with a high near 95. Heat index values as high as 101. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Saturday Night: A chance of showers and thunderstorms, mainly before 8 p.m. Partly cloudy, with a low around 75. Calm wind becoming south around 5 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Sunday: A chance of showers and thunderstorms after 2 p.m. Partly sunny, with a high near 95. Southwest wind 5 to 10 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Sunday Night: Showers and thunderstorms likely, mainly between 8 p.m. and 2 a.m. Patchy fog after 2 a.m. Otherwise, mostly cloudy, with a low around 72. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Monday: A chance of showers and thunderstorms before 8 a.m., then a chance of showers and thunderstorms after 2 p.m. Patchy fog before 8 a.m. Otherwise, mostly sunny, with a high near 89. Chance of precipitation is 40%.

Monday Night: A chance of showers and thunderstorms before 8 p.m. Mostly clear, with a low around 65. Chance of precipitation is 30%.

Tuesday: Sunny, with a high near 89.

Tuesday Night: Partly cloudy, with a low around 68.

Wednesday: A chance of showers and thunderstorms. Mostly sunny, with a high near 93. Chance of precipitation is 30%.

Wednesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Chance of precipitation is 50%.

Thursday: A chance of showers and thunderstorms. Partly sunny, with a high near 84. Chance of precipitation is 30%.

 

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