We're in Carmel, California and do most of our camping in the coast. I don't' think we've ever been cold in it. It has a heater... We have been hot, but also have an air conditioner (that we installed this year, the previous owners had removed it). We love our HTT, but I don't think it's for everyone. We started in a tent, went to a popup and now a hybrid. It's not just park it and go, you have to setup and tear down (the ends) each time you move, we can do this is about 10 - 15 minutes..... We're getting to leave in 10 days for 3 weeks on the Oregon Coast (we go every year). Good luck in your search!!!!
