Chipmunks in Colorado in August
Yes, August is one of the best months to see chipmunks in Colorado. It is the 3rd busiest month of the year, with 6,141 of the 39,043 sightings logged across the year (15.7%), 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.
Peak month for chipmunks in Colorado
15.7%
of yearly sightings
6,141
records in August
#3
busiest month of 12
39,043
verified records a year
July 20.9%, August 15.7%, September 9.5%. Busiest month is July at 20.9%.
39,043 verified observations of chipmunks in Colorado, recorded across 12 months of the year on iNaturalist.
When chipmunks are recorded in Colorado
Peak month
July
8,155 records (20.9% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 883 | 2.3% |
| February | 780 | 2% |
| March | 1,348 | 3.5% |
| April | 3,115 | 8% |
| May | 4,043 | 10.4% |
| Junepeak | 7,075 | 18.1% |
| Julypeak | 8,155 | 20.9% |
| Augustpeak | 6,141 | 15.7% |
| September | 3,715 | 9.5% |
| October | 1,957 | 5% |
| November | 979 | 2.5% |
| December | 852 | 2.2% |
Chipmunks you are most likely to see
| Species | Verified observations |
|---|---|
| Common Golden-mantled Ground Squirrel | 6,577 |
| Eastern Fox Squirrel | 6,371 |
| Black-tailed Prairie Dog | 6,354 |
| Yellow-bellied Marmot | 5,770 |
| Least Chipmunk | 2,167 |
| Fremont's Squirrel | 1,964 |
| Wyoming Ground Squirrel | 1,334 |
| Colorado Chipmunk | 1,070 |
In Colorado, August carries 15.7% of the year's chipmunks sightings, about 7.4 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 July (20.9%) into August, and it heads toward September (9.5%) after. This is right inside the peak window, so August is one of the surest months to plan a trip around.
The chipmunks most often recorded in Colorado are Common Golden-mantled Ground Squirrel, Eastern Fox Squirrel and Black-tailed Prairie Dog. Those counts are annual totals rather than a August split, so treat them as which species you are likely to encounter, while the month figures above show how many sightings fall in August itself.
Which chipmunks you are most likely to see
- Common Golden-mantled Ground Squirrel6,577 records
- Eastern Fox Squirrel6,371 records
- Black-tailed Prairie Dog6,354 records
- Yellow-bellied Marmot5,770 records
- Least Chipmunk2,167 records
- Fremont's Squirrel1,964 records
Plan your chipmunk trip in Colorado
Start with live tours near Bent's Old Fort National Historic Site, 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 Bent's Old Fort National Historic Site
Use the live GetYourGuide widget to compare local departures and activity styles close to the main chipmunk viewing area.
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Frequently asked questions
Can you see chipmunks in Colorado in August?+
Yes. August accounts for 6,141 of the 39,043 verified chipmunks sightings logged in Colorado across the year, which is 15.7% of the annual total.
Is August a good time to see chipmunks in Colorado?+
August is one of the best months. It ranks 3rd of the year and sits inside the peak window of July, June and August.
What month is best for chipmunks in Colorado?+
July is the single busiest month, with the broader peak running through July, June and August, based on 39,043 verified observations.
Which chipmunks are you most likely to see in Colorado?+
The most-recorded species in Colorado are Common Golden-mantled Ground Squirrel, Eastern Fox Squirrel and Black-tailed Prairie Dog, based on all-time iNaturalist counts.
See chipmunks in Colorado in other months
More wildlife in Colorado