Precipitation associated with developing wave of low pressure coming in from the southwest will occur Friday night into Saturday morning. It will be mostly rain or a mix and appears unlikely to accumulate in the city but there can be a coating to an inch in some areas north and west.
There is then a break during the day Saturday followed by some flurries or snow showers later in the day into the evening with the arctic front and associated upper trough. At the same time there will be sharp temperature drop right around or just after sunset and that can result in some slippery conditions on area roads.
There will be some sun Friday that will tend to fade behind increasing and thickening clouds in the afternoon. Nonetheless, there will still be a tendency for most temperatures to reach the upper 40s and lower 50s Friday afternoon.
We still believe that a low pressure system will begin to take shape off the Jersey Shore, and an arctic cold front will begin to move eastward towards the Appalachians. What would cause any snow in Baltimore and its adjacent
suburbs would be steady precipitation Friday night, falling into air which will be marginally cold enough to support it. At this juncture, there are equal chances of seeing rain as well as wet snow in the area Friday night.
Saturday, that area of low pressure located off the New Jersey Coast will be heading out to sea, paving the way for the arctic cold front to arrive. Therefore, by the time the truly “colder” air arrives and winds start to increase, just about all of our precipitation will be OVER WITH. However, Saturday night and Sunday do look blustery and very chilly. Winds could gust as high as 25 or 30 miles per hour on Sunday, making temperatures in the 30s.