 Temperatures are going to be seasonable with highs in the mid-80s. Behind the trough looks like more humid conditions overnight. Then we'll have a partly sunny, very warm, humid day on Sunday with highs in the upper 80s. Across the country today, partly to mostly sunny skies in the northeastern quarter of the country, there will be a frontal system along the mid-Atlantic coast that will cause showers and thunderstorms in portions of the southeast.