 It'll turn cooler and less muggy. Overnight lows will be in the 60s. Good deal of sunshine on Monday. We'll have a fresh breeze out of the northwest. Temperatures will be cooler. It'll be much less muggy. Our highs only around 80. Sunny and pleasant with low humidity on Tuesday, but a bit warmer. Highs low to mid-80s. Lots of sunshine turning warmer and more muggy by Wednesday. Highs will be in the upper 80s. Fourth of July on Thursday, partly cloudy, hot and muggy. Watch out for some late-day thunderstorms and highs in the low to mid-90s. Mike Stenefer, WTOP News.