We moved into a new home recently which doesn't have a lawn. I thought I could wait until next spring to install one, but the dirt being tracked in is too much. Also, the weeds are beginning to pop up. If it is too late for sod, any suggestions?

I don't think that it is too late for sod, actually it might be a pretty good time.

Otherwise I would throw out some rye or something that germinates quickly for your mud problem.

You can still sod with good results. When the soil temp approaches 50 degrees, then you won't get much growth for the rest of the winter.