anon for this-
It will never freeze.
Freezing means dropping to 32 degrees, and then losing enough energy to change states to solid.
Energy is lost during evaporation, which can drop the water’s temperature, but once something freezes evaporation can’t occur.
I assume that once water is at a temperature that it wouldn’t change states either way, evaporation would be minimal.
Also, the cold air, even at 0% humidity has a much lower absorbtion capability of water than warm air, so I doubt it would have much of an effect.
Several years ago I read how “wind chill” is measured, but I don’t remember specifics.
I seem to recall that not everyone agrees how it should be measured, or if it is a useless number, since it isn’t really an accurate measurement of how someone bundled up for winter would feel.
Is this the measurement that has two thermometers side-by-side, with the bulb of one in wet cotton, or is that the relative humidity test?