Not sure the winter weather of Northen Virginia is a match to ask this question. The quantity of precipitation, the temperature fluctuations, and the current temperature after the falling of precipitation are all factors. All factors that likely mean as little to the people of Northern Virginia as it does to the people of El Paso, TX. Both areas get freezing and below freezing temperatures, and both areas get snow. But the impact from both areas to windshield wipers frozen to the windshield because of a large quantity of precipitation, that ends up freezing, in a deep thick sheet, and then the temperature drops 5 below zero, is why people stand up their wipers.
When I lived in Alaska, the area I lived in was a rainforest. In the winter with very limited sunlight, large quantities of rain and freezing rain would fall. Followed by snow all night. In the morning, temperature might be ten degrees. Windshield wipers would be under easily a half inch of ice. That is a lot of ice. Maybe something not common in Northen Viginia, but a lot of the north has like environments. Maybe not rain forest like, but enough precipitation in quantity that freezes the windshield wipers to the glass.