Month by month

What Reptiles and Amphibians Are Out in Michigan in September

33 reptiles and amphibians are active in Michigan in September, and 19 are at peak. Peak species include the American Toad, Green Frog, Eastern Red-backed Salamander, and Spring Peeper.

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

Full 12-month Michigan calendar Pick your ecoregion

Species out across Michigan, by group and month

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

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

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At peak in September 19

Snakes

peak

SnakesCentral RatsnakePantherophis alleghaniensis

peak

SnakesCommon WatersnakeNerodia sipedon

peak

SnakesDeKay's BrownsnakeStoreria dekayi

peak

SnakesEastern Hognose SnakeHeterodon platirhinos

peak

SnakesEastern MilksnakeLampropeltis triangulum

peak

SnakesRed-bellied SnakeStoreria occipitomaculata

peak

SnakesRing-necked SnakeDiadophis punctatus

peak

SnakesSmooth GreensnakeOpheodrys vernalis

Turtles

peak

TurtlesEastern Musk TurtleSternotherus odoratus

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 ToadsNorthern Leopard FrogLithobates pipiens

peak

Frogs and ToadsPickerel FrogLithobates palustris

peak

Frogs and ToadsSpring PeeperPseudacris crucifer

Salamanders

peak

SalamandersEastern NewtNotophthalmus viridescens

peak

SalamandersEastern Red-backed SalamanderPlethodon cinereus

peak

SalamandersFour-toed SalamanderHemidactylium scutatum

Shoulder season in September 14

Snakes

shoulder

SnakesCommon Garter SnakeThamnophis sirtalis

shoulder

SnakesCommon Ribbon SnakeThamnophis saurita

shoulder

SnakesEastern FoxsnakePantherophis vulpinus

shoulder

SnakesNorth American RacerColuber constrictor

Lizards

shoulder

LizardsCommon Five-lined SkinkPlestiodon fasciatus

Turtles

shoulder

TurtlesCommon Snapping TurtleChelydra serpentina

shoulder

TurtlesNorthern Map TurtleGraptemys geographica

shoulder

TurtlesPainted TurtleChrysemys picta

shoulder

TurtlesPond SliderTrachemys scripta

introduced

shoulder

TurtlesSpiny SoftshellApalone spinifera

Frogs and Toads

shoulder

Frogs and ToadsWood FrogLithobates sylvaticus

Salamanders

shoulder

SalamandersBlue-spotted SalamanderAmbystoma laterale

shoulder

SalamandersEastern Tiger SalamanderAmbystoma tigrinum

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.

Michigan in September

What reptiles and amphibians are out in Michigan in September?

33 reptiles and amphibians are active in Michigan in September, and 19 are at peak. Peak species include the American Toad, Green Frog, Eastern Red-backed Salamander, and Spring Peeper.

Are venomous snakes active in Michigan in September?

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