Thursday brings one final day of 90-degree heat to Delmarva before a backdoor cold front moves in, sparking chances for gusty thunderstorms and ushering in cooler conditions. Though the risk of severe storms is low, isolated damaging wind events and downpours are possible. A brief cool spell follows on Friday, but the weekend and early next week feature unsettled weather and a return to above-normal temperatures.. A brief cool spell follows on Friday, but the weekend and early next week feature unsettled weather and a return to above-normal temperatures.