Storing my Speakers

Searched the forums but my case is a bit different.

I moved and for at least a year I need to store my speakers in the attic, it's winter here now and the temprature in the attic may drop to 0°C (32°F) on cold nights and in summer it can be a real sauna but the heat is dry, not humid.

Will the temperature changes damage the drivers ?

Which is the best inexpensive way to wrap them for storage under those conditions ?

Thanks in advance

Rodrigo