We have clear skies and 29° at 5:30 this morning our coldest morning since April 14th. According to the NWS and other sources, a hard freeze is when temps are 28° or below for at least four hours. As I write this our temp has been below 30° since midnight so this doesn’t constitute a hard freeze yet.
A frost is when we get a visible frost. A freeze is when the air temperature drops below freezing. Sometimes we get frost when the temperatures are above freezing and we often have a freeze without frost depending on the amount of humidity in the air.
Below are the graphics containing the info on first freezes in the U.S. (model description is in the upper left-hand corner of each graphic). Click to enlarge each graphic…
Next, we have the first take on our winter guess from the NWS: Keep in mind this is only a guess using current forecast and climatology models available. As a disclaimer, I will not be held accountable for this forecast 🙂 Lets not jinx the forecast with over-exuberance 🙂