I love Jay Cooke year round! The tent camping is great, the park is amazing for hiking and geology study, and there are camper cabins that I have often stayed at as well. This was my first time staying in winter, the camper cabins are cozy and fully heated and really nice. People use them when coming here in winter for the terrific cross country skiing or snowshoeing. The cabins are very simple and have beds, table, heat, and electricity, but no water inside (water punps are nearby, so bring a bucket ir canteen) and no bathroom (but you can use the outhouse nearby, and the campground will have a new bath house by early summer, it is inder construction and almost finished!) . You can use the facilities at the visitor center during the day but they arent open in the evening and are a bit of a trek from the campground. But, it you want to camp in warmth and relative comfort, and want to explire this amazing state park, the camper cabins are a great way to go year round! You can reserve campsites too if you have an RV or dont mind winter camping