Tree Frogs in Indiana in September
Yes, September is a good month to see tree frogs in Indiana. It is the 5th busiest month of the year, with 724 of the 6,513 sightings logged across the year (11.1%), 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 July 2, 2026.
Good month for tree frogs in Indiana
11.1%
of yearly sightings
724
records in September
#5
busiest month of 12
6,513
verified records a year
August 10%, September 11.1%, October 6%. Busiest month is May at 20.8%.
6,513 verified observations of tree frogs in Indiana, recorded across 12 months of the year on iNaturalist.
When tree frogs are recorded in Indiana
Peak month
May
1,355 records (20.8% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 3 | 0% |
| February | 87 | 1.3% |
| March | 641 | 9.8% |
| Aprilpeak | 1,053 | 16.2% |
| Maypeak | 1,355 | 20.8% |
| Junepeak | 802 | 12.3% |
| July | 737 | 11.3% |
| August | 652 | 10% |
| September | 724 | 11.1% |
| October | 393 | 6% |
| November | 51 | 0.8% |
| December | 15 | 0.2% |
Tree Frogs you are most likely to see
| Species | Verified observations |
|---|---|
| Blanchard's Cricket Frog | 1,543 |
| Gray Treefrog | 1,115 |
| Spring Peeper | 985 |
| Western Chorus Frog | 433 |
| Cope's Gray Tree Frog | 430 |
| Green Treefrog | 62 |
| Boreal Chorus Frog | 52 |
| Squirrel Tree Frog | 2 |
In Indiana, September carries 11.1% of the year's tree frogs sightings, about 2.8 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 rising from August (10%) into September, and it heads toward October (6%) after. The busiest month is May (20.8%), so if timing is flexible, that window is the safer bet.
The tree frogs most often recorded in Indiana are Blanchard's Cricket Frog, Gray Treefrog and Spring Peeper. 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 tree frogs you are most likely to see
- Blanchard's Cricket Frog1,543 records
- Gray Treefrog1,115 records
- Spring Peeper985 records
- Western Chorus Frog433 records
- Cope's Gray Tree Frog430 records
- Green Treefrog62 records
Plan your tree 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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Live tours nearbySee live tours near Indiana Dunes National Park
Use the live GetYourGuide widget to compare local departures and activity styles close to the main tree frog viewing area.
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Stay nearbyStay near Indiana Dunes National Park
Compare hotels, cabins and lodges close to the best tree frog viewing area in Indiana.
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Broader backupBook a tree frog tour in Indiana
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Frequently asked questions
Can you see tree frogs in Indiana in September?+
Yes. September accounts for 724 of the 6,513 verified tree frogs sightings logged in Indiana across the year, which is 11.1% of the annual total.
Is September a good time to see tree frogs in Indiana?+
September is the 5th busiest month. It is workable, though May and April is the stronger window for a reliable sighting.
What month is best for tree frogs in Indiana?+
May is the single busiest month, with the broader peak running through May, April and June, based on 6,513 verified observations.
Which tree frogs are you most likely to see in Indiana?+
The most-recorded species in Indiana are Blanchard's Cricket Frog, Gray Treefrog and Spring Peeper, based on all-time iNaturalist counts.
See tree frogs in Indiana in other months
More places to see tree frogs
More wildlife in Indiana