The last spring freeze can occur anytime from early April in the extreme west to early May in the mountain region in the extreme southeast; the first fall freeze is usually between mid and late October. During a 30 year period, fall frosts occurred at the earliest on October 2 and at the latest on November 14. These same records indicate the last spring frost occurred at the earliest on March 7 and at the latest on May 10. The average length of the freeze-free period varies from 166 days on the southeastern plateau to 210 near the lower Ohio River.
For more information on Kentucky weather refer to the UK College of Agriculture Weather Center.