north rim will be closed as I understand it....
The first time I visited the canyon's south rim was in February...although we weren't in the RV. We stayed at El Tovar Lodge.
it was cold.....windy.... and we saw some snow fall while we were there....but it was fun. Trailer village is the only campground in the park with power...and I think you would need power in the cold...but maybe you don't? I don't know if that place is open in the winter or not.
If you don't need power, there's plenty of dispersed camping areas in the national forests. That's what we did there this summer. It was great!
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