A disturbance diving towards the Delaware Coast by this evening will bring periods of snow showers and some light snow in time for the evening rush hour. While snow fall accumulations will be light, the impacts will be an issue for the evening commute.
Clouds will steadily increase through the day with winds from the north and northwest at 5 to 15 mph. Cold conditions will continue with temperatures struggling in the upper 10's to lower 20's for highs throughout the Philadelphia and New York City metropolitan areas. The combination of the northerly winds with the cold temperatures will produce wind chills in the single digits and lower 10's which can cause frost bite in a short period of time.
This evening, snow showers will become widespread throughout the Philadelphia and New York City metropolitan areas. The snow will become steady and light to moderate over southern Pennsylvania, southern and central New Jersey, and southeastern Long Island leading to snowfall totals as much as three inches. For locations north and northwest of the Philadelphia and New York City metropolitan areas, the snow showers will become more scattered in nature and thus more likely to only have a trace in most locations. However, along the coast, snowfall potential will be higher with even a threat for a burst of heavy snow for a brief period of time. Temperatures will fall into the single digits to mid 10's for lows tonight.
High pressure will be in complete control by tomorrow morning with scattered clouds and chilly conditions tomorrow on through Sunday. Winds will be from the northwest at 5 to 15 mph. Temperatures will range from the mid 20's to lower 30's for highs and lower to mid 10's over the interior and mid to upper 10's along the coast for lows.
High pressure will shift off the coast on Monday and Tuesday with moderating temperatures through the period. Scattered cloud cover can be expected with areas of fog a threat for the morning hours. This fog could be locally dense. Temperatures on Monday will range from the upper 10's to lower 20's for lows and mid 30's to lower 40's for highs. Temperatures on Tuesday will range from the upper 20's to mid 30's for lows and mid to upper 40's for highs.
Periods of rain can be expected on Wednesday as a cold front will move through the region. The rain may mix with snow and sleet over some higher elevations. Temperatures will surge into the mid 40's to lower 50's for highs before crashing through the 40's and 30's in the evening.
High pressure will build into the Philadelphia and New York City metropolitan areas on Thursday with windy conditions. Temperatures will range from the upper 20's to mid 30's for lows and upper 30's to mid 40's for highs.