 Your WDEL Weather Center forecast for today. We still have that excessive heat warning in place today and again tomorrow. For today, sunny skies to start, 30% chance of heavy rain later, 97 for a high. Then for tonight, 40% chance of heavy rain, low 77 degrees. Wednesday, increasing chances of rain up to 70% as the day goes on, high 95, and that brings an end to the heat wave.