You should aim to store your wine between 52-58 degrees. At the same time, you need to protect your investment from wild temperature swings.
Temperatures higher than 70 degrees will age your wine too quickly and may affect the wine’s flavors and aromas.
Temperatures below 45 degrees could dry out the corks and allow air into the bottles.
You definitely don’t want the bottles to freeze, which could cause the corks to pop.
In the Phoenix area, heat is the number one enemy of wine.