I'm thinking of popping out there on my way south next week Wondering the same myself Would rather read first hand experience than any weather forecasts that may be wrong
Mornings can be coolish and the nights can get cold,but during the day it is beautiful weather. Summer would be a scorcher of a place to be though.Best time to visit is around now.If you are only staying over night or two a lot of people just pull into the Baths area and camp ,there is toilets and showers and BBQ.