Frogs in Michigan in September
Yes, September is a good month to see frogs in Michigan. It is the 5th busiest month of the year, with 4,601 of the 34,478 sightings logged across the year (13.3%), 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 frogs in Michigan
13.3%
of yearly sightings
4,601
records in September
#5
busiest month of 12
34,478
verified records a year
August 17.2%, September 13.3%, October 3.7%. Busiest month is July at 19%.
34,478 verified observations of frogs in Michigan, recorded across 12 months of the year on iNaturalist.
When frogs are recorded in Michigan
Peak month
July
6,538 records (19% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 18 | 0.1% |
| February | 53 | 0.2% |
| March | 857 | 2.5% |
| April | 3,085 | 8.9% |
| May | 5,408 | 15.7% |
| Junepeak | 6,482 | 18.8% |
| Julypeak | 6,538 | 19% |
| Augustpeak | 5,926 | 17.2% |
| September | 4,601 | 13.3% |
| October | 1,287 | 3.7% |
| November | 180 | 0.5% |
| December | 43 | 0.1% |
Frogs you are most likely to see
| Species | Verified observations |
|---|---|
| American Toad | 9,445 |
| Green Frog | 7,580 |
| Gray Treefrog | 3,306 |
| Wood Frog | 3,161 |
| Spring Peeper | 3,070 |
| Northern Leopard Frog | 2,344 |
| American Bullfrog | 1,531 |
| Western Chorus Frog | 328 |
In Michigan, September carries 13.3% of the year's frogs sightings, about 5 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 (17.2%) into September, and it heads toward October (3.7%) after. The busiest month is July (19%), so if timing is flexible, that window is the safer bet.
The frogs most often recorded in Michigan are American Toad, Green Frog and Gray Treefrog. 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 frogs you are most likely to see
- American Toad9,445 records
- Green Frog7,580 records
- Gray Treefrog3,306 records
- Wood Frog3,161 records
- Spring Peeper3,070 records
- Northern Leopard Frog2,344 records
Plan your frog trip in Michigan
Start with live tours near Isle Royale National Park, 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 Isle Royale National Park
Use the live GetYourGuide widget to compare local departures and activity styles close to the main frog viewing area.
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Stay nearbyStay near Isle Royale National Park
Compare hotels, cabins and lodges close to the best frog viewing area in Michigan.
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Broader backupBook a frog tour in Michigan
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 frogs in Michigan in September?+
Yes. September accounts for 4,601 of the 34,478 verified frogs sightings logged in Michigan across the year, which is 13.3% of the annual total.
Is September a good time to see frogs in Michigan?+
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 frogs in Michigan?+
July is the single busiest month, with the broader peak running through July, June and August, based on 34,478 verified observations.
Which frogs are you most likely to see in Michigan?+
The most-recorded species in Michigan are American Toad, Green Frog and Gray Treefrog, based on all-time iNaturalist counts.
See frogs in Michigan in other months
More wildlife in Michigan