We began the work week with highs in the low 70s, but a dip in the jetstream and an associated low pressure system, allowed a strong cold front to cool us down on Tuesday. The graphic below indicates the upper-level features Tuesday evening, with troughs in the eastern and western U.S., and a flat ridge across the Plains states.
A broad ridge will build into the southern and southeastern U.S. by the end of the week, allowing much warmer air to move back into the Mid-Atlantic. The graphic below indicates how the upper features will look on Friday. Highs will reach the mid-70s in central Virginia on Friday under this ridge. Enjoy!