Icy winter mix delays opening of D.C. federal offices

Steam pours out from a Mexican Burrito vendor's lunch wagon on a street in Washington, DC, on January 23, 2013. Two-thirds of the US was in the grips of a blast of cold Arctic air Wednesday with temperatures falling to some of the lowest marks in years and wind chills plummeting to dangerously low levels. AFP PHOTO/MLADEN ANTONOV (Photo credit should read MLADEN ANTONOV/AFP/Getty Images)

A winter weather advisory was in effect in the Washington, D.C. area until mid-morning Monday due to an expected icy winter mix.

The U.S. Office of Personnel Management announced federal offices will open at Noon on Monday, due to freezing rain in the forecast, according to CBS Washington affiliate WUSA-TV.

Forecasters warned locals to expect some slick spots during the morning commute.

But much milder air was also on the way, so any icy spots were expected to clear out quickly later in the morning, and in the afternoon.