Temp fluctuation affect?

[Michael Jorgensen]

Hi John,
      It might help preserve the tuning.  Lowering temperature, increases
relative humidity.  Since wood absorbs moisture faster than it gives it
up,  there would be an overall higher moisture level in the wood during the
dry season.
Just a thought,
-Mike Jorgensen

John Minor wrote:

> Anyone have any hard evidence(or direct experience) with tuning
> instability caused by regular temperature fluctuations? Several private
> customers are in the habit of turning the thermostat on 60 degrees F at
> bedtime. (brrrrrr) Daytime temps are 68-70ish. Would this wreak havoc on
> tuning?
>
> John Minor
> University of Illinois

-Mike