Average First Frost Dates for Connecticut

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First Frost Dates were calculated using daily climate data from the period between 1991-2020.

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List of Average First Frost Dates for Locations in Connecticut

LocationAverage First Frost Dates
AnsoniaOct. 21 - Oct. 31
AvonOct. 11 - Oct. 20
Beacon FallsOct. 21 - Oct. 31
BethanyOct. 21 - Oct. 31
BloomfieldOct. 11 - Oct. 20
BridgeportNov. 1 - Nov. 10
BristolOct. 11 - Oct. 20
BrookfieldOct. 11 - Oct. 20
BurlingtonOct. 1 - Oct. 10
CanterburyOct. 11 - Oct. 20
ColumbiaOct. 11 - Oct. 20
CromwellOct. 11 - Oct. 20
DanburyOct. 11 - Oct. 20
East GranbyOct. 11 - Oct. 20
East HaddamOct. 21 - Oct. 31
East HartfordOct. 11 - Oct. 20
East HavenOct. 21 - Oct. 31
EastonOct. 21 - Oct. 31
EllingtonOct. 11 - Oct. 20
FairfieldNov. 1 - Nov. 10
FarmingtonOct. 11 - Oct. 20
HaddamOct. 21 - Oct. 31
HamdenOct. 21 - Oct. 31
HartfordOct. 11 - Oct. 20
HebronOct. 11 - Oct. 20
KillingworthOct. 21 - Oct. 31
LebanonOct. 11 - Oct. 20
ManchesterOct. 11 - Oct. 20
MarlboroughOct. 11 - Oct. 20
MeridenOct. 11 - Oct. 20
MiddleburyOct. 11 - Oct. 20
MiddletownOct. 21 - Oct. 31
MilfordNov. 1 - Nov. 10
MonroeOct. 21 - Oct. 31
NaugatuckOct. 11 - Oct. 20
New BritainOct. 11 - Oct. 20
New FairfieldOct. 11 - Oct. 20
New HavenOct. 21 - Oct. 31
New LondonOct. 21 - Oct. 31
NewingtonOct. 11 - Oct. 20
North BranfordOct. 21 - Oct. 31
North HavenOct. 21 - Oct. 31
North StoningtonOct. 11 - Oct. 20
NorwalkNov. 1 - Nov. 10
NorwichOct. 11 - Oct. 20
Old LymeOct. 21 - Oct. 31
OxfordOct. 21 - Oct. 31
PlainvilleOct. 11 - Oct. 20
PlymouthOct. 1 - Oct. 10
ProspectOct. 11 - Oct. 20
Rocky HillOct. 11 - Oct. 20
SeymourOct. 21 - Oct. 31
SheltonNov. 1 - Nov. 10
South WindsorOct. 11 - Oct. 20
SouthburyOct. 11 - Oct. 20
SouthingtonOct. 11 - Oct. 20
StaffordOct. 11 - Oct. 20
StamfordNov. 1 - Nov. 10
StorrsOct. 11 - Oct. 20
StratfordNov. 1 - Nov. 10
ThompsonOct. 1 - Oct. 10
TollandOct. 11 - Oct. 20
TorringtonOct. 1 - Oct. 10
VernonOct. 11 - Oct. 20
WaterburyOct. 11 - Oct. 20
West HartfordOct. 11 - Oct. 20
West HavenOct. 21 - Oct. 31
WethersfieldOct. 21 - Oct. 31
WillimanticOct. 11 - Oct. 20
WiltonOct. 21 - Oct. 31
WindhamOct. 11 - Oct. 20
WindsorOct. 11 - Oct. 20
WolcottOct. 11 - Oct. 20
WoodbridgeOct. 21 - Oct. 31
WoodstockOct. 1 - Oct. 10
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