New england camping in april

Normandy Farms is no longer open year round.

Meredith Woods is open all year round. If you want to see Boston, so is Normandy Farms in Foxboro.

This doesn't answer your question....

I'm not sure how familiar you are with New England weather, but it's a crapshoot that time of year. We are not necessarily out of the woods for some nasty winter like weather, but it typically doesn't stay on the ground long.