 Tonight, slight chance of showers and thunderstorms, mostly cloudy, low around 78. Chance of showers and thunderstorms tomorrow, partly sunny, high around 94. Heat indexes tomorrow as high as 103. Tomorrow night, chance of showers and thunderstorms, mostly cloudy, low around 77. Thursday, chance of showers and thunderstorms, partly cloudy, high near 90. At 751, 78 degrees with fog in Wilmington.