connecticut frost dates, county by county.

Capitol Planning Region

Last spring: 04-03 · First fall: 11-05

Greater Bridgeport Planning Region

Last spring: 03-26 · First fall: 11-19

Lower Connecticut River Valley Planning Region

Last spring: 04-10 · First fall: 10-30

Naugatuck Valley Planning Region

Last spring: 04-10 · First fall: 10-30

Northeastern Connecticut Planning Region

Last spring: 04-16 · First fall: 10-28

Northwest Hills Planning Region

Last spring: 04-20 · First fall: 10-25

South Central Connecticut Planning Region

Last spring: 04-04 · First fall: 11-06

Southeastern Connecticut Planning Region

Last spring: 04-01 · First fall: 11-05

Western Connecticut Planning Region

Last spring: 04-18 · First fall: 10-27