Connecticut frost dates: D

City	Last frost	First frost	Season	Zone
Danbury	Apr 20	Oct 20	183 d	6b
Danielson	Apr 25	Oct 19	177 d	6b
Darien	Apr 17	Oct 23	189 d	7a
Dayville	May 1	Oct 9	161 d	6b
Deep River	Apr 6	Nov 17	225 d	7a
Derby	Apr 25	Oct 17	175 d	6b
Durham	Apr 26	Oct 16	173 d	6b