Chipmunks in Wyoming in September
Yes, September is a good month to see chipmunks in Wyoming. It is the 5th busiest month of the year, with 1,215 of the 12,308 sightings logged across the year (9.9%), 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 chipmunks in Wyoming
9.9%
of yearly sightings
1,215
records in September
#5
busiest month of 12
12,308
verified records a year
August 17.7%, September 9.9%, October 2.7%. Busiest month is June at 24.8%.
12,308 verified observations of chipmunks in Wyoming, recorded across 12 months of the year on iNaturalist.
When chipmunks are recorded in Wyoming
Peak month
June
3,049 records (24.8% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 47 | 0.4% |
| February | 72 | 0.6% |
| March | 126 | 1% |
| April | 402 | 3.3% |
| May | 1,848 | 15% |
| Junepeak | 3,049 | 24.8% |
| Julypeak | 2,954 | 24% |
| Augustpeak | 2,180 | 17.7% |
| September | 1,215 | 9.9% |
| October | 334 | 2.7% |
| November | 54 | 0.4% |
| December | 27 | 0.2% |
Chipmunks you are most likely to see
| Species | Verified observations |
|---|---|
| Uinta Ground Squirrel | 2,335 |
| Yellow-bellied Marmot | 2,331 |
| Common Golden-mantled Ground Squirrel | 1,530 |
| American Red Squirrel | 1,514 |
| Least Chipmunk | 1,134 |
| Black-tailed Prairie Dog | 631 |
| Yellow-pine Chipmunk | 474 |
| White-tailed Prairie Dog | 413 |
In Wyoming, September carries 9.9% of the year's chipmunks sightings, about 1.6 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 (17.7%) into September, and it heads toward October (2.7%) after. The busiest month is June (24.8%), so if timing is flexible, that window is the safer bet.
The chipmunks most often recorded in Wyoming are Uinta Ground Squirrel, Yellow-bellied Marmot and Common Golden-mantled Ground Squirrel. 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 chipmunks you are most likely to see
- Uinta Ground Squirrel2,335 records
- Yellow-bellied Marmot2,331 records
- Common Golden-mantled Ground Squirrel1,530 records
- American Red Squirrel1,514 records
- Least Chipmunk1,134 records
- Black-tailed Prairie Dog631 records
Plan your chipmunk 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.
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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 chipmunk viewing area.
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Broader backupBook a chipmunk tour in Wyoming
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Frequently asked questions
Can you see chipmunks in Wyoming in September?+
Yes. September accounts for 1,215 of the 12,308 verified chipmunks sightings logged in Wyoming across the year, which is 9.9% of the annual total.
Is September a good time to see chipmunks in Wyoming?+
September is the 5th busiest month. It is workable, though June and July is the stronger window for a reliable sighting.
What month is best for chipmunks in Wyoming?+
June is the single busiest month, with the broader peak running through June, July and August, based on 12,308 verified observations.
Which chipmunks are you most likely to see in Wyoming?+
The most-recorded species in Wyoming are Uinta Ground Squirrel, Yellow-bellied Marmot and Common Golden-mantled Ground Squirrel, based on all-time iNaturalist counts.
See chipmunks in Wyoming in other months
More wildlife in Wyoming