Frogs in Indiana in September
Yes, September is a good month to see frogs in Indiana. It is the 5th busiest month of the year, with 2,004 of the 18,474 sightings logged across the year (10.8%), 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 Indiana
10.8%
of yearly sightings
2,004
records in September
#5
busiest month of 12
18,474
verified records a year
August 10.2%, September 10.8%, October 4.5%. Busiest month is May at 24.6%.
18,474 verified observations of frogs in Indiana, recorded across 12 months of the year on iNaturalist.
When frogs are recorded in Indiana
Peak month
May
4,551 records (24.6% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 13 | 0.1% |
| February | 193 | 1% |
| March | 1,213 | 6.6% |
| Aprilpeak | 2,586 | 14% |
| Maypeak | 4,551 | 24.6% |
| Junepeak | 2,676 | 14.5% |
| July | 2,362 | 12.8% |
| August | 1,892 | 10.2% |
| September | 2,004 | 10.8% |
| October | 830 | 4.5% |
| November | 113 | 0.6% |
| December | 41 | 0.2% |
Frogs you are most likely to see
| Species | Verified observations |
|---|---|
| American Toad | 3,327 |
| Green Frog | 2,294 |
| Fowler's Toad | 1,776 |
| Blanchard's Cricket Frog | 1,543 |
| American Bullfrog | 1,535 |
| Gray Treefrog | 1,115 |
| Spring Peeper | 985 |
| Wood Frog | 685 |
In Indiana, September carries 10.8% of the year's frogs sightings, about 2.5 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 holds steady between August and September, and it heads toward October (4.5%) after. The busiest month is May (24.6%), so if timing is flexible, that window is the safer bet.
The frogs most often recorded in Indiana are American Toad, Green Frog and Fowler's Toad. 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 Toad3,327 records
- Green Frog2,294 records
- Fowler's Toad1,776 records
- Blanchard's Cricket Frog1,543 records
- American Bullfrog1,535 records
- Gray Treefrog1,115 records
Plan your frog trip in Indiana
Start with live tours near Indiana Dunes National Park, then compare a nearby stay and a broader wildlife backup before you lock in the trip.
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Use the live GetYourGuide widget to compare local departures and activity styles close to the main frog viewing area.
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Gear to see them
Frequently asked questions
Can you see frogs in Indiana in September?+
Yes. September accounts for 2,004 of the 18,474 verified frogs sightings logged in Indiana across the year, which is 10.8% of the annual total.
Is September a good time to see frogs in Indiana?+
September is the 5th busiest month. It is workable, though May and June is the stronger window for a reliable sighting.
What month is best for frogs in Indiana?+
May is the single busiest month, with the broader peak running through May, June and April, based on 18,474 verified observations.
Which frogs are you most likely to see in Indiana?+
The most-recorded species in Indiana are American Toad, Green Frog and Fowler's Toad, based on all-time iNaturalist counts.
See frogs in Indiana in other months
More wildlife in Indiana