Most hubs are open till 6- 7pm for drop-offs. Look up FedEx Worldwide Shipping in your area.
I would try this....
Pack a box like you were going to ship it in the cold. Shove it in the fridge (~36F) around 6pm and check it the next morning at 10am. Try the test in the freezer (~5F). It is unlikely your package will be in 15F weather the entire time of the trip. It will sit in the depot for a few hours on each end, a truck or two inbetween, and on the plane for a few hours.
Not sure I would do it whatever the results of that test. What if the package was delayed a day in the worst case due to some unforseen incident?
I think you should have your friend ship them to me in FL and I'll keep an eye on them here till the weather warms up![]()