Best Time to See Tree Frogs in North Dakota
July, August and May is the best time to see tree frogs in North Dakota. Based on 113 verified iNaturalist observations, here is exactly when tree frogs are most active across the year in North Dakota.
By Tim, founder of Easy Street Markets. I maintain the wildlife database and verify every animal and source myself. Updated June 28, 2026.
113 verified observations of tree frogs in North Dakota, recorded across 9 months of the year on iNaturalist.
When tree frogs are recorded in North Dakota
Peak month
July
31 records (27.4% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 0 | 0% |
| February | 1 | 0.9% |
| March | 0 | 0% |
| April | 10 | 8.8% |
| Maypeak | 21 | 18.6% |
| June | 14 | 12.4% |
| Julypeak | 31 | 27.4% |
| Augustpeak | 24 | 21.2% |
| September | 7 | 6.2% |
| October | 4 | 3.5% |
| November | 1 | 0.9% |
| December | 0 | 0% |
Tree Frogs you are most likely to see
| Species | Verified observations |
|---|---|
| Boreal Chorus Frog | 95 |
| Cope's Gray Tree Frog | 7 |
| Gray Treefrog | 2 |
Sightings of tree frogs in North Dakota peak in July, when 31 of the year's 113 verified observations are logged — about 27.4% of the annual total. Activity stays high through July, August and May.
The quietest stretch is January, March and December, when tree frogs are hardest to find — no verified records exist for January. If a reliable sighting matters, plan around the peak window rather than the off-season.
The tree frogs you are most likely to encounter in North Dakota are Boreal Chorus Frog, Cope's Gray Tree Frog and Gray Treefrog — the most-recorded species in the state. Each keeps its own seasonal rhythm, but the month-by-month pattern above reflects every reported sighting together.
Where to go
Best places to see tree frogs in North Dakota
- Knife River Indian Villages National Historic Site — National Historic Site
- Lewis & Clark National Historic Trail — National Historic Trail
- North Country National Scenic Trail — National Scenic Trail
- Theodore Roosevelt National Park — National Park
- Fort Union Trading Post National Historic Site — National Historic Site
Plan your tree frog trip in North Dakota
Start with live tours near Knife River Indian Villages National Historic Site, 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 Knife River Indian Villages National Historic Site
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 Knife River Indian Villages National Historic Site
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Broader backupBook a tree frog tour in North Dakota
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Frequently asked questions
What is the best month to see tree frogs in North Dakota?+
July is the single best month, and the broader peak window runs through July, August and May, based on 113 verified iNaturalist observations.
When are tree frogs hardest to see in North Dakota?+
January is the quietest month for tree frogs in North Dakota, with no verified records on iNaturalist.
Are tree frogs active year-round in North Dakota?+
Tree frogs are recorded in 9 of 12 months in North Dakota, concentrated around July and August.
More places to see tree frogs
More wildlife in North Dakota