Yes! You can, and should freeze coffee that isn't going to be used for more than 4 weeks. Coffee can stay frozen for up to 6 months.There's a little degradation of the coffee when freezing, but it protects them much better than having it sit at room temperature for extended periods of time.You should break the coffee into 2 or 4 weeks worth of packets, so that you only have to unfreeze what you immediately need. You don't want to continually freeze and unfreeze a single large bag.Simply take the coffee out of the freezer 24 hours before you need to use it, to allow it time to thaw.