Planting grass seed while there is snow on the ground is actually a great idea. When snow is on the ground and the air is cold, it creates cracks in the ground that allow the seed to fall deeper into the soil. Kentucky bluegrass, fescues and rye grass seeds are the best type to use in cold-weather planting. When spring arrives and the ground thaws, the seeds will begin to grown and will leave you with a beautiful lawn.
Aerate the area where you will be planting the grass seed. Using the shovel, poke holes into the snow. Go as deep as you can into the snow. This will allow some of the seeds to fall into the hold and get to the soil quicker. It will also save the seed from turning into bird feed.
Fill your small pail or can with the grass seed. Don't pour the seeds out. Shake the pail going from the left to the right so the seed comes out in a steady, even flow. Cover the area completely. You do not have to totally cover the snow. Just make sure the blanket of seed is evenly spread and not in piles.
Sit back in the spring and watch your neighbors work on getting that beautiful, lush lawn while yours has already started growing. Your grass will be strong because the root will be deep down into the soil.
It is possible that you might need to do some touch-ups as the melting snow can wash away some of the grass seed. In that situation, just plant the same way you would normally plant grass seed. Aerate the area to be planted, sprinkle the seed and gently cover the seeds with dirt. Keep the seed watered to ensure it gets rooted quickly. It will take some time for the new growth to catch up to the grass that has already rooted, but it won't be long before it's all the same height.