Dave, I had a 150 class Aviar crack on me today. It was sitting in my yard and cracked just hitting the basket on a 30' putt. I have quite a few Aviars laying around in the backyard so I'm wondering if this is common, and if I should bring them in when the temp drops quickly (was 44 yesterday, 24 today)?
I don't know about the cold per se, but leaving them lay around in your yard exposes them to a lot of UV. Much more than you would get by playing with them and putting them in your bag. That will make them very brittle over time. If they have already had a nice UV bath, then cold temps would make them extra brittle.