Tree Frogs in Wisconsin in May
Yes, May is one of the best months to see tree frogs in Wisconsin. It is the 3rd busiest month of the year, with 997 of the 6,305 sightings logged across the year (15.8%), 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.
Peak month for tree frogs in Wisconsin
15.8%
of yearly sightings
997
records in May
#3
busiest month of 12
6,305
verified records a year
April 9.5%, May 15.8%, June 14.9%. Busiest month is August at 21.3%.
6,305 verified observations of tree frogs in Wisconsin, recorded across 12 months of the year on iNaturalist.
When tree frogs are recorded in Wisconsin
Peak month
August
1,344 records (21.3% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 6 | 0.1% |
| February | 2 | 0% |
| March | 125 | 2% |
| April | 599 | 9.5% |
| Maypeak | 997 | 15.8% |
| June | 941 | 14.9% |
| Julypeak | 1,129 | 17.9% |
| Augustpeak | 1,344 | 21.3% |
| September | 888 | 14.1% |
| October | 241 | 3.8% |
| November | 29 | 0.5% |
| December | 4 | 0.1% |
Tree Frogs you are most likely to see
| Species | Verified observations |
|---|---|
| Spring Peeper | 1,581 |
| Gray Treefrog | 1,266 |
| Boreal Chorus Frog | 508 |
| Cope's Gray Tree Frog | 104 |
| Blanchard's Cricket Frog | 32 |
| Green Treefrog | 2 |
| Cuban Tree Frog | 1 |
In Wisconsin, May carries 15.8% of the year's tree frogs sightings, about 7.5 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 rising from April (9.5%) into May, and it heads toward June (14.9%) after. This is right inside the peak window, so May is one of the surest months to plan a trip around.
The tree frogs most often recorded in Wisconsin are Spring Peeper, Gray Treefrog and Boreal Chorus Frog. Those counts are annual totals rather than a May split, so treat them as which species you are likely to encounter, while the month figures above show how many sightings fall in May itself.
Which tree frogs you are most likely to see
- Spring Peeper1,581 records
- Gray Treefrog1,266 records
- Boreal Chorus Frog508 records
- Cope's Gray Tree Frog104 records
- Blanchard's Cricket Frog32 records
- Green Treefrog2 records
Plan your tree frog trip in Wisconsin
Start with live tours near Apostle Islands National Lakeshore, then compare a nearby stay and a broader wildlife backup before you lock in the trip.
GetYourGuide
Live tours nearbySee live tours near Apostle Islands National Lakeshore
Use the live GetYourGuide widget to compare local departures and activity styles close to the main tree frog viewing area.
Booking.com
Stay nearbyStay near Apostle Islands National Lakeshore
Compare hotels, cabins and lodges close to the best tree frog viewing area in Wisconsin.
Viator
Broader backupBook a tree frog tour in Wisconsin
Compare guided wildlife tours, boat trips and nature experiences if you want a second travel network beyond the live widget.
Frequently asked questions
Can you see tree frogs in Wisconsin in May?+
Yes. May accounts for 997 of the 6,305 verified tree frogs sightings logged in Wisconsin across the year, which is 15.8% of the annual total.
Is May a good time to see tree frogs in Wisconsin?+
May is one of the best months. It ranks 3rd of the year and sits inside the peak window of August, July and May.
What month is best for tree frogs in Wisconsin?+
August is the single busiest month, with the broader peak running through August, July and May, based on 6,305 verified observations.
Which tree frogs are you most likely to see in Wisconsin?+
The most-recorded species in Wisconsin are Spring Peeper, Gray Treefrog and Boreal Chorus Frog, based on all-time iNaturalist counts.
See tree frogs in Wisconsin in other months
More places to see tree frogs
More wildlife in Wisconsin