Typical Dates of First Fall Killing Frost

Color Key to Typical Dates of First Fall Frost

Zone	Typical Dates*
	September 13 - 19
	September 20 - 26
	September 27 - October 3
	October 4 - 10
	October 11 - 17
	October 18 - 24

*Please note that zone boundaries are approximate! Also, first fall frost dates can vary greatly from year to year. For more detailed local climate data, refer to the Wisconsin County Home Pages