Snakes in South Dakota in July

Yes, July is one of the best months to see snakes in South Dakota. It is the 3rd busiest month of the year, with 347 of the 2,246 sightings logged across the year (15.4%), based on verified iNaturalist records.

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By Tim, founder of Easy Street Markets. I maintain the wildlife database and verify every animal and source myself. Updated June 28, 2026.

Bullsnake photographed in South DakotaBlack Hills Redbelly Snake photographed in South DakotaEastern Hognose Snake photographed in South Dakota
Photos by iNaturalist observers, used under Creative Commons.

Peak month for snakes in South Dakota

15.4%

of yearly sightings

347

records in July

#3

busiest month of 12

2,246

verified records a year

June 24%, July 15.4%, August 13%. Busiest month is June at 24%.

Best months: June, May, JulyPeak season right now

2,246 verified observations of snakes in South Dakota, recorded across 12 months of the year on iNaturalist.

When snakes are recorded in South Dakota

Peak month

June

538 records (24% of the year)

Quietest month

January

3 records

MonthObservationsShare
January30.1%
February40.2%
March110.5%
April823.7%
Maypeak51222.8%
Junepeak53824%
Julypeak34715.4%
August29213%
September29713.2%
October1436.4%
November140.6%
December30.1%

Snakes you are most likely to see

SpeciesVerified observations
Plains Garter Snake477
Gopher Snake335
Prairie Rattlesnake294
Western Terrestrial Garter Snake200
North American Racer186
Common Garter Snake166
Red-bellied Snake120
Western Foxsnake107

In South Dakota, July carries 15.4% of the year's snakes sightings, about 7.1 points above an even month-to-month split. That makes it the 3rd busiest of the twelve months, out of 12 months with recorded activity.

Activity is easing off from June (24%) into July, and it heads toward August (13%) after. This is right inside the peak window, so July is one of the surest months to plan a trip around.

The snakes most often recorded in South Dakota are Plains Garter Snake, Gopher Snake and Prairie Rattlesnake. Those counts are annual totals rather than a July split, so treat them as which species you are likely to encounter, while the month figures above show how many sightings fall in July itself.

Which snakes you are most likely to see

  • Plains Garter Snake477 records
  • Gopher Snake335 records
  • Prairie Rattlesnake294 records
  • Western Terrestrial Garter Snake200 records
  • North American Racer186 records
  • Common Garter Snake166 records
Plan your tripBadlands National Park

Plan your snake trip in South Dakota

Start with live tours near Badlands National Park, then compare a nearby stay and a broader wildlife backup before you lock in the trip.

Gear to see them

Frequently asked questions

Can you see snakes in South Dakota in July?+

Yes. July accounts for 347 of the 2,246 verified snakes sightings logged in South Dakota across the year, which is 15.4% of the annual total.

Is July a good time to see snakes in South Dakota?+

July is one of the best months. It ranks 3rd of the year and sits inside the peak window of June, May and July.

What month is best for snakes in South Dakota?+

June is the single busiest month, with the broader peak running through June, May and July, based on 2,246 verified observations.

Which snakes are you most likely to see in South Dakota?+

The most-recorded species in South Dakota are Plains Garter Snake, Gopher Snake and Prairie Rattlesnake, based on all-time iNaturalist counts.