We've gone the first or second week of December the past 6 years. We've seen everything from highs of 50 to highs of 80. 70's is the average high. Watch the forecast carefully and pack accordingly. If days are in the 60's, bring a coat and gloves for evening, it can get down into the 40's. I remember the first time I saw Wishes last December, it was only a high of 50 that day and it was down in the 40's after dark, I was so cold! Other trips it was around 80 the whole time and you only needed a jacket at night.