Originally Posted by
_ForceD_
Last week I went on a ride with the air temperature in the mid-/high-20s (F). Like other times I've ridden in cold temps...my water bottle froze. Earlier today I went on a ride and the temp was 10*F but my water bottle didn't freeze. Why did it freeze at 25* but not at 10*?
Dan
The temperature was actually in °C.
Most likely, the water had not yet reached thermal equilibrium with the surroundings.