Temps of 150* is really cooking powder. I can't imagine storing ammo where it might get that warm for any length of time...but that's probably because I live in Maine!! Moisture is more our problem, especially for those who live on the coast, or those who try to keep their powder in a moist basement.
People are like rifles. Some are tried and true, having great eyes, personality, and fun to be with. Others never seem to hit the mark with you. Still others go off half-cocked. Still, it's nice to know most of them.