Tree Frogs in Iowa in September
Yes, September is a good month to see tree frogs in Iowa. It is the 4th busiest month of the year, with 405 of the 2,584 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 July 2, 2026.
Good month for tree frogs in Iowa
15.7%
of yearly sightings
405
records in September
#4
busiest month of 12
2,584
verified records a year
August 15.7%, September 15.7%, October 6.6%. Busiest month is May at 17.9%.
2,584 verified observations of tree frogs in Iowa, recorded across 12 months of the year on iNaturalist.
When tree frogs are recorded in Iowa
Peak month
May
463 records (17.9% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 2 | 0.1% |
| February | 2 | 0.1% |
| March | 87 | 3.4% |
| April | 272 | 10.5% |
| Maypeak | 463 | 17.9% |
| Junepeak | 407 | 15.8% |
| July | 339 | 13.1% |
| Augustpeak | 406 | 15.7% |
| September | 405 | 15.7% |
| October | 170 | 6.6% |
| November | 25 | 1% |
| December | 6 | 0.2% |
Tree Frogs you are most likely to see
| Species | Verified observations |
|---|---|
| Blanchard's Cricket Frog | 869 |
| Boreal Chorus Frog | 369 |
| Gray Treefrog | 288 |
| Cope's Gray Tree Frog | 123 |
| Spring Peeper | 54 |
| Pacific chorus frog | 1 |
| Green Treefrog | 1 |
In Iowa, September carries 15.7% of the year's tree frogs sightings, about 7.4 points above an even month-to-month split. That makes it the 4th busiest of the twelve months, out of 12 months with recorded activity.
Activity holds steady between August and September, and it heads toward October (6.6%) after. The busiest month is May (17.9%), so if timing is flexible, that window is the safer bet.
The tree frogs most often recorded in Iowa are Blanchard's Cricket Frog, Boreal Chorus 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 tree frogs you are most likely to see
- Blanchard's Cricket Frog869 records
- Boreal Chorus Frog369 records
- Gray Treefrog288 records
- Cope's Gray Tree Frog123 records
- Spring Peeper54 records
- Pacific chorus frog1 records
Plan your tree frog trip in Iowa
Start with live tours near Effigy Mounds National Monument, 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 tree frog viewing area.
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Frequently asked questions
Can you see tree frogs in Iowa in September?+
Yes. September accounts for 405 of the 2,584 verified tree frogs sightings logged in Iowa across the year, which is 15.7% of the annual total.
Is September a good time to see tree frogs in Iowa?+
September is the 4th busiest month. It is workable, though May and June is the stronger window for a reliable sighting.
What month is best for tree frogs in Iowa?+
May is the single busiest month, with the broader peak running through May, June and August, based on 2,584 verified observations.
Which tree frogs are you most likely to see in Iowa?+
The most-recorded species in Iowa are Blanchard's Cricket Frog, Boreal Chorus Frog and Gray Treefrog, based on all-time iNaturalist counts.
See tree frogs in Iowa in other months
More places to see tree frogs
More wildlife in Iowa