Update (4:03 p.m.): The latest forecast from the National Weather Service now calls for an 80 percent chance of snow in Arlington, mainly after 8 p.m. Tuesday.
The wind chill will be about zero Tuesday night. Total nighttime snow accumulation of about 1 inch is possible.
Winter weather advisories are in effect for southern and eastern Washington suburbs, with the most snow expected southeast of the Washington metro area, according to the Capital Weather Gang.
Updated (11:02 a.m.): Arlington felt like 10 below zero Tuesday morning, thanks to the wind chill, and there's an increasing chance it could end the day with more snow.
The National Weather Service predicts a high of 21 on Tuesday in Arlington, with a 60 percent chance of snow between 10 p.m. and 1 a.m., according to the latest forecast. Tuesday night's low should be around 13 degrees.
The service predicts less than a 1 inch accumulation of new snow is possible. The forecast just hours earlier called for only a slight chance of snow. This link will take you to the latest forecast for Arlington.
Temperatures are expected to climb — slowly — over the rest of the week.
The extended forecast:
Wednesday: High near 26, low around 15.
Thursday: High near 31, low around 23.
Friday: High near 42, low around 30.
Saturday: High near 47, low around 35 and a 30 percent chance of rain Saturday night.
Sunday: High near 42, low near 26.
Monday: High near 39.