Frost and freeze information

Chilly night time temperatures are expected tonight through Friday night.

At our National Weather Service Louisville office, we have special products we issue when cold weather strikes to cause problems for local agriculture and horticulture:

  • Frost Advisory.  We issue a Frost Advisory when we expect widespread (as opposed to just patchy) frost.  We look for temperatures at or below about 35 degrees for at least two hours at three or more reporting sites in the advisory area with winds under about 6 mph.
  • Freeze Watch.  We issue a Freeze Watch when we have enough confidence that a widespread hard freeze will occur in the next 12-48 hours.
  • Freeze Warning.  We issue a Freeze Warning when we expect temperatures at or below 30 degrees for at least two hours at three or more reporting sites. 

Frost Advisories and Freeze Warnings are no longer issued once the growing season has ended and cold temperatures no longer pose a threat to agriculture.  To make this determination we rely heavily on advice from the University of Kentucky Agriculture Department as well as public horticulturists and farmers from across the region.

You can view a plethora of climatological frost/freeze statistics for each of our main climate sites:

Median Date of first 32 degree freeze

Median date of first 28 degree freeze

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