If you've never gone, or been, camping or have never camped, I would suggest waiting until late April or May. At this point, without the right cold weather gear, you would be in for a miserable time.

When camping, 50 degrees can feel like 30, and overnight in a tent the air gets very very cold. So cold you don't want to leave the sleeping bag, much less the tent.

When you have evenings where it doesn't go below 60 degrees - those are nights for a first time camper. You could go cold weather camping, of course, but if you do be prepared to invest in good cold weather gear. A regular sleeping bag won't do. Cold weather camping is more of a challenge than an activity.

Glamping is still an option this late in the season - and you could rent a yurt or cabin at many camp sites in Maryland, Little Bennett might have year round cabins. While not exactly "rustic" it will get you outside and you won't hate camping like you would if you tried to climb out of a tent to light a fire in 45 degree weather.