...Accumulating Snow This Evening... Scattered snow showers are expected this evening across portions of northern Virginia, central Maryland, and the Potomac Highlands. Temperatures will fall into the upper 20s and lower 30s during this time, and localized accumulations of a coating to an inch are most likely. The best chance for snow showers will be through midnight. Untreated surfaces may become slippery or even icy during this time, so please use extra caution when travelling through this evening.