If condoms sit in my cold mailbox for a couple hours are they still safe?

There is a specific type of condom I want to try but none of my local pharmacys have it. I'm thinking about ordering it online (from a reputable seller of course) but its been in the mid 30s (Fahrenheit) and they may sit in the mailbox for a couple hours if they come while I'm working.

Condoms are the only controceptives my husband and I use and although it wouldn't be a problem if I got pregnant we aren't planning on that just yet.

UPDATE: my husband got them for me for Christmas lol!