You want to know what the weather in March in New Jersey will be like?
The weather on any day in NJ is directly related to the digit of pi which corresponds to the date on which this said weather is required.
Actually, like people above said, it could be cold, and there is a small chance of snow (we have actually had snow as late as April, if i remember right). However, knowing March, there will be plenty of wind. It will be cold. Heavy jackets are recommended, along with gloves and hats (just in case).
And btw, I second what Mr.Holton said - NJ is truly amazing - We have a town named Brick right next to a town named Wall. And we have Double Trouble.