Endura Gridlock or Gridlock II.

Officially, it's a mid-weight jacket. Depends, of course on both how you perceive cold and how spirited your cycling.

My cycling tends to be on the spirited side. Unofficially, the Gridlock's my jacket of choice under freezing. Just by adding a layer or two underneath, I've worn it to -4F, the coldest it's gotten here in the past five years, and still had the pit-zips open.