If your grass is matted down after the snowpiles, rake it in an upward direction. This will allow the dry air and sunlight to penetrate the roots and allow it to wake-up quicker. Rick says the soil temperatures are only in the 30's still, compared to last-year at this time they had already shot up to the 50 and 60 degree marks.
So you have plenty of time to feed your yard before we have to start worrying about Crabgrass. Before fertilizing, Rick also recommends gypsum pellets. Then of course you'll want to think about fertilizing with crabgrass pre-emergence. As long as you get it down before the soil temperatures reach 60 degrees, you should be fine.