Re: Weather Effects Guitars
I read somewhere that 70 degres, plus or minus a few, and 50% humidity is about the perfect range for guitars. Usually in an air conditioned home, this should be about "average". I keep my thermostat set on 70, and the relative humidity stays between 45 and 55 according to my humistat.
I get some out of tune issues as well, but outside of a specificly climate controlled environment, I'm not sure there is much you can do about that. You can run a de-humidifer in your guitar room if you think humidity is too high.