With the mild winter you should be thinking spring! Your lawn is currently a bit confused here in the upper Midwest as some areas have been fully exposed to the sun and some areas are still under snow cover.
You should expect to see some confusing results as spring blossoms and some areas have been exposed to winter for some time, while other areas have had complete snow cover for for some time. I would expect to see some severe snow mold issues in some areas and some other areas to jump right into spring.
We will see you real soon.