The threat of rainfall will be returning to the Philadelphia and New York City metropolitan areas, but not before the region experiences another day of well above normal temperatures.
A warm front at the mid levels of the atmosphere will drive through the Philadelphia and New York City metropolitan areas today with the threat for widely scattered to isolated showers over portions of the northern interior. Otherwise, the rest of the region will experience variable cloud cover, light southwesterly winds around 5 to 10 mph, and temperatures rising into the lower to mid 60's over the interior and mid to upper 60's in urban locations and along the coast for highs.
These mild conditions will not last much longer as a cold front will approach the region by tomorrow afternoon with an increasing threat for showers throughout the Philadelphia and New York City metropolitan areas. These showers will be heavy at times, but still scattered. The cold front will stall just off the New Jersey coast and southeast of Long Island by Tuesday evening, setting up a more significant rainfall threat for Wednesday.