Forecast: Heat Wave Grips Southampton Through the Fourth of July

The National Weather Service is predicting highs at or above 90 for the next week, prompting an Excessive Heat Watch.

The alert, issued Wednesday afternoon is set to expire at 8 p.m. Sunday. It includes Montgomery, Philadelphia, Chester, Delaware and Bucks counties.

The NWS predicts highs of 90, 96, 96 and 95 Thursday through Sunday, followed by 93, 89 and 90 Monday, Tuesday and Wednesday's Fourth of July holiday.

Aside from a slight chance of rain Thursday night and Friday, virtually no precipitation is in the forecast.

Here's a look at the NWS' extended forecast for Southampton: 

Thursday: Sunny, with a high near 90. West wind between 3 and 9 mph. 

Thursday Night: A chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 70. Southwest wind between 3 and 7 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms. 

Friday: A chance of showers and thunderstorms before noon. Partly sunny, with a high near 96. West wind between 5 and 11 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms. 

Friday Night: A slight chance of showers and thunderstorms before 11pm. Partly cloudy, with a low around 73. West wind around 5 mph becoming calm. Chance of precipitation is 20%.

Saturday: A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 96. Chance of precipitation is 20%.

Saturday Night: Partly cloudy, with a low around 72. 

Sunday: Partly sunny, with a high near 95. 

Sunday Night: Mostly cloudy, with a low around 71. 

Monday: Mostly sunny, with a high near 93. 

Monday Night: Partly cloudy, with a low around 69. 

Tuesday: Mostly sunny, with a high near 89. 

Tuesday Night: Partly cloudy, with a low around 69. 

Independence Day: Mostly sunny, with a high near 90.