This was our first try at capturing what happens to boiling-water thrown into the air which was -22 degrees Fahrenheit. Evaporation plays a key role in this fun phenomenon. The rate of evaporation depends on the temperature difference between the water and the air. The combination of hot water, cold and dry air cause most of the tossed near-boiling water to evaporate before it hits the ground, and the tiny droplets that don’t evaporate will freeze into ice crystals while still in the air.