VISITING THE US

Hey guys! I fly paragliders and I'm coming around December to the US for about 3 weeks. I was wondering where could I possibly go to fly around December. Since is Winter, I was wondering if I could find a warmer place to fly. Any event going on around this time? I've tried to find some information online but with no luck. Anyone could please help!
Thanks a lot!
Moacir
Thanks a lot!
Moacir