I wouldn't worry to much on Electrics...Teles are Pretty Tough...(unless you got one of them little Sissy Necks)....just kiddin....
...Acoustics now, are a different story....just remember...High Humidity, Tuning goes sharp....low humidity, tuning goes Flat....and a Hygrometer ain't a Bad idea...it doesn't have to be Super accurate....just use as a reference point, if you get my Drift.