 On Sunday, partly sunny skies with a better chance of thunderstorms after about 2 to 3 p.m. Storms could have some high winds and some very heavy rain. I'm 7 News Chief Meteorologist Veronica Johnson in the First Alert Weather Center. It's 72 degrees in Tyson, 69 in Waldorf, 73 degrees in Lawn Fount Plaza, and it's 71 degrees outside of our studios here in Chevy Chase.