Bison in Wyoming in September
Yes, September is a good month to see bison in Wyoming. It is the 5th busiest month of the year, with 1,641 of the 12,289 sightings logged across the year (13.4%), based on verified iNaturalist records.
By Tim, founder of Easy Street Markets. I maintain the wildlife database and verify every animal and source myself. Updated June 28, 2026.
Good month for bison in Wyoming
13.4%
of yearly sightings
1,641
records in September
#5
busiest month of 12
12,289
verified records a year
August 15.3%, September 13.4%, October 4.8%. Busiest month is July at 20.2%.
12,289 verified observations of bison in Wyoming, recorded across 12 months of the year on iNaturalist.
When bison are recorded in Wyoming
Peak month
July
2,483 records (20.2% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 235 | 1.9% |
| February | 306 | 2.5% |
| March | 215 | 1.7% |
| April | 289 | 2.4% |
| May | 1,817 | 14.8% |
| Junepeak | 2,469 | 20.1% |
| Julypeak | 2,483 | 20.2% |
| Augustpeak | 1,882 | 15.3% |
| September | 1,641 | 13.4% |
| October | 590 | 4.8% |
| November | 161 | 1.3% |
| December | 201 | 1.6% |
Bison you are most likely to see
| Species | Verified observations |
|---|---|
| American Bison | 10,479 |
| Bighorn Sheep | 1,362 |
| Mountain Goat | 394 |
| Domestic Cattle | 33 |
| Domestic Sheep | 1 |
In Wyoming, September carries 13.4% of the year's bison sightings, about 5.1 points above an even month-to-month split. That makes it the 5th busiest of the twelve months, out of 12 months with recorded activity.
Activity is easing off from August (15.3%) into September, and it heads toward October (4.8%) after. The busiest month is July (20.2%), so if timing is flexible, that window is the safer bet.
The bison most often recorded in Wyoming are American Bison, Bighorn Sheep and Mountain Goat. Those counts are annual totals rather than a September split, so treat them as which species you are likely to encounter, while the month figures above show how many sightings fall in September itself.
Which bison you are most likely to see
- American Bison10,479 records
- Bighorn Sheep1,362 records
- Mountain Goat394 records
- Domestic Cattle33 records
- Domestic Sheep1 records
Plan your bison trip in Wyoming
Start with live tours near Bighorn Canyon National Recreation Area, then compare a nearby stay and a broader wildlife backup before you lock in the trip.
GetYourGuide
Live tours nearbySee live tours near Bighorn Canyon National Recreation Area
Use the live GetYourGuide widget to compare local departures and activity styles close to the main bison viewing area.
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Stay nearbyStay near Bighorn Canyon National Recreation Area
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Broader backupBook a bison tour in Wyoming
Compare guided wildlife tours, boat trips and nature experiences if you want a second travel network beyond the live widget.
Gear to see them
Frequently asked questions
Can you see bison in Wyoming in September?+
Yes. September accounts for 1,641 of the 12,289 verified bison sightings logged in Wyoming across the year, which is 13.4% of the annual total.
Is September a good time to see bison in Wyoming?+
September is the 5th busiest month. It is workable, though July and June is the stronger window for a reliable sighting.
What month is best for bison in Wyoming?+
July is the single busiest month, with the broader peak running through July, June and August, based on 12,289 verified observations.
Which bison are you most likely to see in Wyoming?+
The most-recorded species in Wyoming are American Bison, Bighorn Sheep and Mountain Goat, based on all-time iNaturalist counts.
See bison in Wyoming in other months
More places to see bison
More wildlife in Wyoming