Not around here! Don't confuse your ultra-low indoor relative humidity, falsely created by heating cool air of average humidity, with outdoor relative humidity. The average afternoon relative humidity in eastern PA is higher in December and January than any other months of the year. It's actually lowest in the spring, and stays fairly low thru July. In addition, the blazing sun of June - August go a long way to heating and drying your stacks, the same way heating air in your home in the winter makes your home so dry during those months.