 Your WDEL Weather Center forecast. It's now 740. First of all, an excessive heat warning stays in place today and tomorrow. For today, sunny, 30% chance of some rain around later. High of 97. 40% chance of heavy rain tonight. Slow down to 77. Tomorrow, growing chances of rain up to 70%. High 95. That brings this heat wave to an end. Thursday, we're at 85 degrees. 30% chance of thunderstorms. Friday, sunny. High 86.