I hate waxing in cold temps, we've had a few days already of high 50s here in TX and I was just noticing today that wax application is changing.
When the panels get too cold the wax will be more difficult to apply, the wax goes on unevenly and won't bond to the paint properly. It is very obvious to the naked eye, rather than a uniform thin layer you will get areas that look as though nothing has been applied right next to areas with too much wax on them. I personally find applying with a machine to greatly help with this process, the longer you work the area you will see the wax begin to blend together and become uniform. More passes and slower passes.
If you don't own a PC (like me

) I have a useful trick for you. WalMart sells a $20 crappy 6" orbital buffer, go a pick one of those up and make to following mods on it since the foam padding and bonnets just suck.
-scrape off all the foam padding with a razor blade or similar. You should now see a plastic backing plate with a screw in the center
-get some velcro, the hook side, and cut little pieces about 1" long. IMPORTANT: hot glue (or similar) those pieces to the backing plate. The sticky on the velcro itself will NOT hold and you will throw the pad while waxing. Don't over think the process, just slather on hot glue till you're sure it can't come off.
-get a 6" foam polishing pad and go to town.
You can keep the stock bonnet setup if you would like, but the above solves two issues for the crappy orbital. 1 - foam pad are safer than bonnets, and 2 - The foam is much much lighter overall and it allows the orbital to actually have some rotation rather than just vibrate in your hands. The rotation is what you are looking for to help apply the wax in the cold.