The arctic cold will set the stage for the winter storm and last for at least the next week. We are talking about 7 + days where temperatures will not climb above freezing. Generally, low temperatures will be in the single digits and teens and high temperatures will be in the teens and 20s.

A bitter blast of cold air settles over the D.C. region Tuesday as all eyes turn to a potential weekend winter storm that could deliver significant snowfall.

Sunshine returns Wednesday as chilly air sticks around with below-average highs in the low to mid-40s. Clear and cold weather is expected overnight with below-freezing temperatures. The nearly full moon will be shining bright overhead. MORE | INTERACTIVE ...

Snow could be headed for the DMV for the last weekend in January.

A storm riding the edge of incoming polar air could bring the D.C. region a meaningful snowfall Sunday, but the exact track will determine whether the region sees a decent storm or misses out entirely.