Connecticut Frost Dates

Across Connecticut, the average last spring frost ranges from Apr 5 in Bridgeport to May 8 in Torrington. Find your town below, or enter your ZIP code for the nearest station.

Largest cities

BridgeportStamfordNew HavenHartfordWaterburyNorwalkDanburyNew BritainBristolMeridenWest HavenMilford city

Average frost dates in Connecticut towns

Average (50%) dates of the last 32°F frost in spring and the first in fall, from the nearest NOAA station. Towns with 5,000+ residents.

TownLast frostFirst frostSeason (days)
AnsoniaApr 25Oct 17175
BridgeportApr 5Nov 6216
BristolApr 25Oct 18172
DanburyMay 1Oct 14166
DerbyApr 25Oct 17175
GrotonApr 16Oct 28194
HartfordApr 17Oct 26191
MeridenApr 26Oct 16175
MiddletownApr 26Oct 16175
Milford cityApr 5Nov 6216
NaugatuckApr 18Oct 26191
New BritainApr 17Oct 26191
New HavenApr 17Oct 27193
New LondonApr 16Oct 28194
NorwalkApr 17Oct 23188
NorwichApr 14Oct 24192
SheltonApr 25Oct 17175
StamfordApr 17Oct 23188
TorringtonMay 8Oct 5151
WaterburyApr 26Oct 16175
West HavenApr 17Oct 27193