Your morning Delaware weather update A typical late March weather pattern is settling over Delaware today, with temperatures climbing from the upper 40s this morning into the mid-60s by afternoon, accompanied by thunderstorms that will persist through the overnight hours. Starting your Monday morning with temperatures around 47 degrees, you'll notice steady southwest winds at 10 miles per hour making it feel a bit cooler. By mid-morning, clouds will thicken ahead of thunderstorms expected to develop around noon.