Month by month

What Reptiles and Amphibians Are Out in Indiana in September

32 reptiles and amphibians are active in Indiana in September, and 5 are at peak. Peak species include the American Toad, American Bullfrog, DeKay's Brownsnake, and Gray Treefrog.

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

Full 12-month Indiana calendar Pick your ecoregion

Species out across Indiana, by group and month

Group
Snakes		2	5	12	13	13	11	11	9	7	4
Lizards			1	3	3	3	3	3	3	1
Turtles		3	4	6	6	6	6	6	5	2	1
Frogs and Toads		8	10	12	12	11	11	10	10	9	4
Salamanders	2	9	11	13	11	10	3	4	5	6	3	2

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

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At peak in September 5

Snakes

peak

SnakesDeKay's BrownsnakeStoreria dekayi

peak

SnakesEastern Hognose SnakeHeterodon platirhinos

Frogs and Toads

peak

Frogs and ToadsAmerican BullfrogLithobates catesbeianus

peak

Frogs and ToadsAmerican ToadAnaxyrus americanus

peak

Frogs and ToadsGray TreefrogDryophytes versicolor

Shoulder season in September 27

Snakes

shoulder

SnakesCentral RatsnakePantherophis alleghaniensis

shoulder

SnakesCommon Garter SnakeThamnophis sirtalis

shoulder

SnakesCommon WatersnakeNerodia sipedon

shoulder

SnakesEastern MilksnakeLampropeltis triangulum

shoulder

SnakesNorth American RacerColuber constrictor

shoulder

SnakesRing-necked SnakeDiadophis punctatus

shoulder

SnakesRough GreensnakeOpheodrys aestivus

Lizards

shoulder

LizardsCommon Five-lined SkinkPlestiodon fasciatus

shoulder

LizardsEastern Fence LizardSceloporus undulatus

shoulder

LizardsSix-lined RacerunnerAspidoscelis sexlineatus

Turtles

shoulder

TurtlesCommon Snapping TurtleChelydra serpentina

shoulder

TurtlesNorthern Map TurtleGraptemys geographica

shoulder

TurtlesPainted TurtleChrysemys picta

shoulder

TurtlesPond SliderTrachemys scripta

shoulder

TurtlesSpiny SoftshellApalone spinifera

Frogs and Toads

shoulder

Frogs and ToadsBlanchard's Cricket FrogAcris blanchardi

shoulder

Frogs and ToadsFowler's ToadAnaxyrus fowleri

shoulder

Frogs and ToadsGreen FrogLithobates clamitans

shoulder

Frogs and ToadsPickerel FrogLithobates palustris

shoulder

Frogs and ToadsSouthern Leopard FrogLithobates sphenocephalus

shoulder

Frogs and ToadsSpring PeeperPseudacris crucifer

shoulder

Frogs and ToadsWood FrogLithobates sylvaticus

Salamanders

shoulder

SalamandersEastern Red-backed SalamanderPlethodon cinereus

shoulder

SalamandersEastern Tiger SalamanderAmbystoma tigrinum

shoulder

SalamandersMarbled SalamanderAmbystoma opacum

shoulder

SalamandersNorthern Slimy SalamanderPlethodon glutinosus

shoulder

SalamandersSouthern Two-lined SalamanderEurycea cirrigera

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.

Indiana in September

What reptiles and amphibians are out in Indiana in September?

32 reptiles and amphibians are active in Indiana in September, and 5 are at peak. Peak species include the American Toad, American Bullfrog, DeKay's Brownsnake, and Gray Treefrog.

Are venomous snakes active in Indiana in September?

No venomous snakes on this list are active in Indiana in September.