If your mother or your wife didn´t let you store your films in the fridge you can protect your films from heat with a simple thermic bag and a cool and dry place.
The best way to preserve analog films are to keep them the cold environment inside the refrigerator in the kitchen. The low temperature is good to our favorite films, often set to 3º C. But sometimes we can´t do it, just because our mothers or wives simply think it is no good mixing food and fun.
But your film don´t need to be unprotected, the solution in that cases is a simple thermic bag, the same type we use to transport cold drinks and food. I had this Polaroid thermic bag that is perfect for the job, it´s stylish and can hold plenty of films. Just store the bag in a dry place away from the sun light.