National Weather Service United States Department of Commerce

The frost/freeze program in the spring, which means when the National Weather Service issues Frost and Freeze headlines normally begins after the average last date of a freeze normally happens. For our foothill and piedmont counties, this occurs in mid-April and for the mountains, in late April. Below are two maps, the first of which shows the dates of when we start issuing frost and freeze headlines in the Spring, and the other is a more regional depictions of the average last freezes.

 

Map of Spring Start Dates for Issuing Frost or Freeze Products

 

Average Last Freeze Date Map for the Region