Track today's light precipitation as it moves in.
You can see the purple on the above map -- winter weather advisories are out for the Baltimore and suburban DC areas for today with this disturbance as they could see a couple of inches of snow in spots. Locally, an inch is probably a bit more realistic for an expectation...although many of us may just end up with a coating as precipitation will be light and temperatures above freezing. The best chance of an inch or two will be across the northern and western suburbs, down through Lancaster and into Maryland although most anyone along and northwest of I-95 up to Trenton should have a shot at getting an inch out of this system.
High temperatures for the day will occur around midday -- near 40 in the city, low 40's southeast, upper 30's northwest, with temperatures dropping back a few degrees after precipitation starts up.