I have blanket that would work, dont know why I did not think of it.
As for the climate, I live in Kansas so depending on the time of year it can swing in a wide range, last week we had a couple of hot days 90+ the next day was to be the same and it only got in to the mid 70's. A guy I work with is getting me in to it and wants to hike southren MO and work our way "up" to bigger and better things. we have talked about winter hiking but I think I would rather do a "drive up" winter camp first.