Christmas in March?

How do you tell a 3 year old to file away the Christmas carols in his mind until the day after Thanksgiving 2008? He wants us to sing Rudolph the Red-Nosed Reindeer and Away in a Manger every night before bed, and he sang Jingle Bells in his bed today before he drifted off for his nap! I guess the snow outside is not helping our case, so come on spring! Aren't there any good spring songs we could learn... although I guess we would just be singing those in late October!