Month by month

What Reptiles and Amphibians Are Out in Oregon in September

37 reptiles and amphibians are active in Oregon in September, and 23 are at peak. Peak species include the Pacific Chorus Frog, Western Fence Lizard, Northwestern Garter Snake, and Common Garter Snake.

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

Full 12-month Oregon calendar Pick your ecoregion

Species out across Oregon, by group and month

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

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

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At peak in September 23

Snakes

peak

SnakesAquatic Garter SnakeThamnophis atratus

peak

SnakesCommon Garter SnakeThamnophis sirtalis

peak

SnakesGopher SnakePituophis catenifer

peak

SnakesNorth American RacerColuber constrictor

peak

SnakesNorthern Rubber BoaCharina bottae

peak

SnakesNorthwestern Garter SnakeThamnophis ordinoides

peak

SnakesRing-necked SnakeDiadophis punctatus

peak

SnakesWestern Terrestrial Garter SnakeThamnophis elegans

Lizards

peak

LizardsCommon Sagebrush LizardSceloporus graciosus

peak

LizardsDesert Horned LizardPhrynosoma platyrhinos

peak

LizardsNorthern Alligator LizardElgaria coerulea

peak

LizardsPygmy Short-horned LizardPhrynosoma douglasii

peak

LizardsSouthern Alligator LizardElgaria multicarinata

peak

LizardsWestern Fence LizardSceloporus occidentalis

Frogs and Toads

peak

Frogs and ToadsAmerican BullfrogLithobates catesbeianus

introduced

peak

Frogs and ToadsCascades FrogRana cascadae

peak

Frogs and ToadsCoastal Tailed FrogAscaphus truei

peak

Frogs and ToadsColumbia Spotted FrogRana luteiventris

peak

Frogs and ToadsNorthern Red-legged FrogRana aurora

peak

Frogs and ToadsPacific Chorus FrogPseudacris regilla

peak

Frogs and ToadsWestern ToadAnaxyrus boreas

Salamanders

peak

SalamandersClouded SalamanderAneides ferreus

peak

SalamandersPacific Giant SalamanderDicamptodon tenebrosus

Shoulder season in September 14

Snakes

shoulder

SnakesWestern RattlesnakeCrotalus oreganus

venomous

Lizards

shoulder

LizardsCommon Side-blotched LizardUta stansburiana

shoulder

LizardsLong-nosed Leopard LizardGambelia wislizenii

shoulder

LizardsWestern SkinkPlestiodon skiltonianus

Turtles

shoulder

TurtlesPond SliderTrachemys scripta

introduced

Frogs and Toads

shoulder

Frogs and ToadsGreat Basin SpadefootSpea intermontana

Salamanders

shoulder

SalamandersCascade Torrent SalamanderRhyacotriton cascadae

shoulder

SalamandersDunn's SalamanderPlethodon dunni

shoulder

SalamandersEnsatinaEnsatina eschscholtzii

shoulder

SalamandersLong-toed SalamanderAmbystoma macrodactylum

shoulder

SalamandersNorthwestern SalamanderAmbystoma gracile

shoulder

SalamandersRough-skinned NewtTaricha granulosa

shoulder

SalamandersSouthern Torrent SalamanderRhyacotriton variegatus

shoulder

SalamandersWestern Red-backed SalamanderPlethodon vehiculum

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.

Oregon in September

What reptiles and amphibians are out in Oregon in September?

Are venomous snakes active in Oregon in September?

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