 And behind the front in the early morning hours, turning cooler and less muggy are those upper 60s to mid-70s. Partly sunny skies, cooler temperatures, lower humidity on Thursday. Could be a passing shower or storm. Our highs upper 80s to lower 90s. Good deal of cloud cover on Friday with some showers and storms. Highs low to mid-80s. Hot and muggy on Saturday with the risk of some afternoon and some evening thunderstorms. Highs low to 90s. Going to be a hot one on Sunday. Mike Stennifer, WTOP News.