Month by month

What Reptiles and Amphibians Are Out in Connecticut in September

26 reptiles and amphibians are active in Connecticut in September, and 17 are at peak. Peak species include the Green Frog, American Toad, Common Garter Snake, and Pickerel Frog.

Counted from iNaturalist research-grade observations recorded inside Connecticut. Seasons shift across the state, so for a closer match, pick your ecoregion.

Full 12-month Connecticut calendar Pick your ecoregion

Species out across Connecticut, by group and month

Group
Snakes	1	3	7	8	8	8	8	8	6	3	1
Turtles	1	3	4	4	4	4	4	3	2	1
Frogs and Toads	2	6	7	8	8	8	8	8	7	3
Salamanders	2	6	7	7	5	5	5	7	7	5	1

Numbers = species active that month (at peak or just starting / winding down).

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At peak in September 17

Snakes

peak

SnakesCentral RatsnakePantherophis alleghaniensis

peak

SnakesCommon Garter SnakeThamnophis sirtalis

peak

SnakesDeKay's BrownsnakeStoreria dekayi

peak

SnakesEastern CopperheadAgkistrodon contortrix

venomous

peak

SnakesEastern MilksnakeLampropeltis triangulum

peak

SnakesNorth American RacerColuber constrictor

peak

SnakesRing-necked SnakeDiadophis punctatus

Frogs and Toads

peak

Frogs and ToadsAmerican BullfrogLithobates catesbeianus

peak

Frogs and ToadsAmerican ToadAnaxyrus americanus

peak

Frogs and ToadsGray TreefrogDryophytes versicolor

peak

Frogs and ToadsGreen FrogLithobates clamitans

peak

Frogs and ToadsPickerel FrogLithobates palustris

peak

Frogs and ToadsSpring PeeperPseudacris crucifer

Salamanders

peak

SalamandersEastern NewtNotophthalmus viridescens

peak

SalamandersMarbled SalamanderAmbystoma opacum

peak

SalamandersNorthern Dusky SalamanderDesmognathus fuscus

peak

SalamandersNorthern Two-lined SalamanderEurycea bislineata

Shoulder season in September 9

Snakes

shoulder

SnakesCommon WatersnakeNerodia sipedon

Turtles

shoulder

TurtlesCommon Snapping TurtleChelydra serpentina

shoulder

TurtlesPainted TurtleChrysemys picta

shoulder

TurtlesPond SliderTrachemys scripta

introduced

Frogs and Toads

shoulder

Frogs and ToadsFowler's ToadAnaxyrus fowleri

shoulder

Frogs and ToadsWood FrogLithobates sylvaticus

Salamanders

shoulder

SalamandersEastern Red-backed SalamanderPlethodon cinereus

shoulder

SalamandersFour-toed SalamanderHemidactylium scutatum

shoulder

SalamandersSpotted SalamanderAmbystoma maculatum

Peak and shoulder ratings are rough guidance, not a schedule. Weather, elevation and the year can shift any species by weeks.

Rare and protected species are left off on purpose. Look, don't take, and never handle a venomous snake.

Connecticut in September

What reptiles and amphibians are out in Connecticut in September?

26 reptiles and amphibians are active in Connecticut in September, and 17 are at peak. Peak species include the Green Frog, American Toad, Common Garter Snake, and Pickerel Frog.

Are venomous snakes active in Connecticut in September?

Yes. The Eastern Copperhead can be active in September. Watch where you step and don't handle them.