Heat and humidity persist in DC area to end weekend; Cooldown expected this week

The sweltering hot streak continues Sunday in the DC area thanks to high humidity and temperatures in the 90s.

We will see mid-level cloud cover thinning through Sunday morning, giving way to mostly sunny conditions in the afternoon. Highs are expected to peak in the lower 90s.

There will be storms, but figuring out exactly where is a challenge. A focus for an isolated downpour could be along Interstate 81 thanks to differential heating over the Alleghenies, which could push some air pockets upward. Elsewhere, a lee trough, or a broad, diffuse band of low pressure just west of I-95, could bring up a rogue downpour during the afternoon or evening.

Otherwise, most people will stay dry. Tonight’s lows only dip into the mid 70s with lower 70s to the north and west.

Monday we start the work week with a carbon copy of Sunday, but only a degree or two warmer. Same thing Tuesday, with maybe better storm coverage Wednesday. At this time, it does not look like we will have strong to severe storms, although any thunderstorm can produce brief, localized gusty winds.

A front approaches Thursday bringing us back into the upper 80s, then the Canadian high rises overhead Friday and Saturday. This will bring absolutely beautiful weather with highs in the mid 80s and much lower humidity. Eyes on the prize!

Leave a Comment