Monday night I actually had Anastasia turn on the heater for the first time this season, but only up to 60. Last night, with the more severe cold and rain we finally turned it up to a comfortable 65. I find that these temperature changes really can be felt in my back. So it has a heating pad night again like Monday night was. Personally I prefer it cold but have been advised to not allow myself to get cold or this could bring on cramping in the back.