As the second heat wave this month swept the Delaware Valley, residents of the Philadelphia area were encouraged to stay indoors and hydrate as much as possible this week.

The National Weather Service has Issue high temperature warning For most of the region, the hot and humid weather will continue until Wednesday.

The announcement went into effect at 12 noon on Sunday and will continue until 8 pm on Wednesday. It will be issued for Philadelphia and Delaware counties, as well as parts of Pennsylvania’s Bucks, Chester, and Montgomery counties. The weather warning also covers Camden and Gloucester counties, as well as parts of Burlington County, New Jersey.

The high temperature index in some parts of the region this week is expected to be between 96-109. The heat index is expected to reach the mid-to-upper part of the 1990s on Sunday, and then break through 100 on Monday.

The strongest high temperature and humidity are expected on Tuesday and Wednesday, when the high temperature index is expected to reach a low of 100 degrees.

Below is Complete forecast for the Philadelphia area From the National Weather Service by Wednesday.

on Sunday: It is sunny most of the time and the maximum temperature is close to 91. It is cloudy at night and the lowest temperature is about 73.
on Monday: Most sunny days, the highest is close to 94. The heat index value is as high as 100. Most of the night is sunny, the lowest is about 74.
on Tuesday: After 2 pm, there is a possibility of slight showers and thunderstorms. The probability of precipitation is 20%. It is sunny most of the time and the maximum temperature is close to 96 degrees. The probability of light showers and thunderstorms before 2 am is 20%. It is cloudy at night and the temperature is as low as about 75 degrees.
on Wednesday: The chance of showers and thunderstorms after 2pm, the chance of precipitation is 40%. It is sunny most of the time and the maximum temperature is close to 96 degrees. There is a 40% chance of showers and thunderstorms before 2 am. It is cloudy and the night temperature is as low as 74 degrees.

This is the second heat wave that has swept the Philadelphia area this month.Hot consultation is Released in most regions in early June When the temperature reaches above 90 degrees, the heat index reaches 100.