Baltimore professional meteorologist Eric the Red says:
"The models hold this [northern] edge into the afternoon, at which time the [precipitation] shield is expected to expand north toward Baltimore in the early eve before ending. ... Impacts would be minor - if any. After record-warmth this weekend, the ground is plenty warm. [Precipitation] lingering after sunset could pose a problem is it's heavy enough, but it should be done falling before that happens."
UPDATE 3 p.m.: "The first round of snow is exiting the [southern] portions of the region. ... The money vort is coming at us from the northwest, and that will bring round 2, which will fall a bit farther north.
Satellite shows clouds expanding across WV and nrn MD, and radar is beginning to pick up on developing snow across northern VA and eastern WV. I honestly don't know where the northern edge will set up... but based on satellite and radar, seems like it will be somewhere between Baltimore City and the PA Line. This precipitation will start to impact the area in the form of rain and wet snow between 3-4 pm and last for several hours, perhaps enough to whiten the ground."
Update 3:30 p.m.: "The [northern] edge of the 2nd round of snow is setting up near I-70 ... so from Baltimore City/I-70 and south, snow likely this eve, maybe enough to whiten the ground and [disrupt] rush hour. North of that, doesn't look like it's gonna make it."
The National Weather Service agrees that it will be mostly rain here.
"BY THE TIME MEASURABLE [PRECIPITATION] ARRIVES... [SURFACE] TEMPS SHOULD BE ABV
FRZG...SO NO ADDITIONAL HEADLINES [EXPECTED]. RAIN [EXPECTED] TO [INCREASE] THIS
AFTN WITH APRCH OF UPR SHRTWV TROF... [ESPECIALLY ACROSS SOUTHERN] ZONES...WHERE
UP TO ONE-TENTH INCH WILL BE PSBL THRU THIS EVE."