The National Weather Service has issued a Winter Weather Advisory for Arlington and surrounding areas on Saturday.
County and VDOT crews are already pretreating roads ahead of the potentially snowy and slippery weather.
From NWS:
WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM EST SATURDAY… THE NATIONAL WEATHER SERVICE IN BALTIMORE MD/WASHINGTON HAS ISSUED A WINTER WEATHER ADVISORY FOR SNOW… SLEET AND FREEZING RAIN… WHICH IS IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM EST SATURDAY. * PRECIPITATION TYPE… SNOW… SLEET… AND FREEZING RAIN. * ACCUMULATIONS… SNOW ACCUMULATION OF UP TO 1 INCH… ALONG WITH AROUND A TRACE OF ICE. * TIMING… LATE TONIGHT THROUGH SATURDAY. * IMPACTS… ICY PATCHES ON ROADS AND BRIDGES WILL MAKE TRAVEL DIFFICULT. * WINDS… EAST 5 MPH OR LESS. * TEMPERATURES… IN THE LOWER 30S. PRECAUTIONARY/PREPAREDNESS ACTIONS… A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW… SLEET… AND FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES… AND USE CAUTION WHILE DRIVING.