It is right at 32.0°F right now - no water yet but the sky is overcast and it is supposed to be fairly warm tomorrow.
The outside air temp is going to remain at 32.0°F for some time due to the enthalpy of fusion - sometimes called latent heat. More on enthalpy. An interesting subject when talking about temperature changes and changes of state of matter.
Blacksmiths do this a lot when normalizing, tempering and annealing metals.
Exergy is fun when looking at alternative energy - most alt.energy scams have really poor exergy.
Ambient temp can stick at 32F - water's "triple point", where it can exist as a solid, liquid, and gas.