First and Last Frost Dates

To make it easier to plan your garden, the regions on this map will help you estimate the first date of frost in the fall and the last date of frost in the spring for your region.

Fall Freeze Map
Median Date of First Frost in the Fall
– Median –
A – Aug 1 – Aug 31
B – Sep 1 – Sep 30
C – Oct 1 – Oct 15
D – Oct 16 – Oct 31
E – Nov 1 – Nov 15
F – Nov 16 – Nov 30
G – Dec 1 – Dec 31
H – Rare Freeze
I – No Freeze
Spring Freeze Map
Median Date of Last Frost in the Spring
– Median –
A – Rare or No Freeze
B – Jan 1 – Feb 28
C – Mar 1 – Mar 31
D – Apr 1 – Apr 15
E – Apr 16 – Apr 30
F – May 1 – May 15
G – May 16 – May 31
H – Jun 1 – Jun 30
I – Jul 1 – Jul 31