As we head through the first portions of the work week, milder air is poised to approach the region from the west in advance of a cold front. This milder air will push up the East Coast; however, due to high pressure ridging down into the Northeast, the return flow of air to the high's south is onshore. This will result in increasing moisture off of the Atlantic and help keep a bit more cloudiness in place as we work into Monday than what we saw today and yesterday. A disturbance that's over the South this morning will push up the coast as well and pass through the region Monday night into later Tuesday, adding some rain and drizzle to the mix for the Delaware Valley.
The front's staying to our north should keep us in the city in a mild if not warm pattern for Wednesday and Thursday. We may be running some decent spreads in temperature across the region on Wednesday afternoon as northern sections may be 20 degrees cooler than Southern Delaware.
A larger storm system organizing in the Plains will push east and northeast for late Thursday and Friday, bringing rain and thunderstorms to our region. Friday may bring a chance for some severe weather across Pennsylvania and Maryland as the front approaches. At minimum, a threat for heavier rain and some gusty winds will be associated with the front but it does look like the prospect for some stronger or even severe storms cannot be ruled out nearby.