First and last frost dates for US locationsNOAA climate normals · 1991–2020
USFrostDates

First and last frost dates in Connecticut

Compare median spring and fall freeze dates for 73 locations in Connecticut. Open a city guide for station details and risk levels.

Median freeze dates for cities in Connecticut
LocationLast spring freezeFirst fall freezeDays betweenGuide
AnsoniaApril 25October 17175 days
AvonApril 25October 18176 days
BarkhamstedApril 30October 17170 days
Blue HillsApril 17October 26192 days
BranfordApril 17October 27193 days
Branford CenterApril 17October 27193 days
BridgeportApril 5November 6215 days
ByramApril 12October 31202 days
CanaanMay 11October 4146 days
Canton ValleyApril 25October 18176 days
City of Milford (balance)April 5November 6215 days
CollinsvilleApril 25October 18176 days
Conning Towers-Nautilus ParkApril 8November 2208 days
Coventry LakeApril 19October 22186 days
DanburyApril 20October 20183 days
DerbyApril 25October 17175 days
East HavenApril 17October 27193 days
EnfieldApril 21October 16178 days
Gales FerryApril 8November 2208 days
GlastonburyApril 17October 26192 days
Glastonbury CenterApril 17October 26192 days
GlenvilleApril 12October 31202 days
HamdenApril 18October 26191 days
HartfordApril 17October 26192 days
HebronApril 28October 13168 days
LedyardApril 8November 2208 days
Long HillApril 8November 2208 days
Mansfield CityApril 19October 22186 days
MeridenApril 26October 16173 days
MilfordApril 5November 6215 days
Montville CenterApril 14October 24193 days
New Hartford CenterApril 30October 17170 days
New HavenApril 17October 27193 days
NoankApril 8November 2208 days
North BranfordApril 17October 27193 days
North Grosvenor DaleMay 1October 9161 days
North HavenApril 18October 26191 days
North StamfordApril 17October 23189 days
Northwest HarwintonMay 8October 5150 days
NorwichApril 14October 24193 days
OrangeApril 25October 17175 days
Oxoboxo RiverApril 14October 24193 days
PawcatuckApril 11October 31203 days
PemberwickApril 12October 31202 days
Poquonock BridgeApril 8November 2208 days
Preston CityApril 14October 24193 days
PutnamMay 1October 9161 days
QuinebaugMay 1October 9161 days
SalemApril 14October 24193 days
SheltonApril 25October 17175 days
South CoventryApril 19October 22186 days
South WindhamApril 28October 13168 days
South WoodstockMay 1October 9161 days
Southwood AcresApril 21October 16178 days
StaffordMay 7October 12158 days
Stafford SpringsMay 7October 12158 days
StorrsApril 19October 22186 days
StratfordApril 5November 6215 days
Suffield DepotApril 21October 16178 days
TariffvilleApril 21October 16178 days
ThompsonMay 1October 9161 days
ThompsonvilleApril 21October 16178 days
TorringtonMay 8October 5150 days
West HavenApril 17October 27193 days
West TorringtonMay 8October 5150 days
WethersfieldApril 17October 26192 days
WillimanticApril 28October 13168 days
Winchester CenterMay 3October 11161 days
WindhamApril 28October 13168 days
WindsorApril 21October 16178 days
Windsor LocksApril 21October 16178 days
WinstedApril 30October 17170 days
WoodmontApril 17October 27193 days

Median dates at nearby stations, using a 32°F (0°C) threshold. The interval is calculated from the two median dates, not a guarantee of frost-free weather. Read the methodology.