The cause behind these changes is the that the temperature is changing while it is raining, so when it drops to 32 degrees F or below, it is snow. At 32 degrees F, it is sleet, and at higher than 32 degrees, it is going to be freezing rain.
Both sleet and freezing rain occur generally the same. They occur when<span> liquid raindrops that form in a layer of warm air fall into a layer of </span>freezing<span> air that stretches to ground level. The difference between these two forms of precipitation</span><span> depends on how thick the layer of </span>freezing<span> air is.</span>