Tree Frogs in Montana in September
Yes, September is a good month to see tree frogs in Montana. It is the 6th busiest month of the year, with 15 of the 160 sightings logged across the year (9.4%), 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 tree frogs in Montana
9.4%
of yearly sightings
15
records in September
#6
busiest month of 12
160
verified records a year
August 12.5%, September 9.4%, October 2.5%. Busiest month is May at 27.5%.
160 verified observations of tree frogs in Montana, recorded across 9 months of the year on iNaturalist.
When tree frogs are recorded in Montana
Peak month
May
44 records (27.5% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 0 | 0% |
| February | 0 | 0% |
| March | 2 | 1.3% |
| April | 18 | 11.3% |
| Maypeak | 44 | 27.5% |
| Junepeak | 30 | 18.8% |
| Julypeak | 26 | 16.3% |
| August | 20 | 12.5% |
| September | 15 | 9.4% |
| October | 4 | 2.5% |
| November | 1 | 0.6% |
| December | 0 | 0% |
Tree Frogs you are most likely to see
| Species | Verified observations |
|---|---|
| Boreal Chorus Frog | 106 |
| Pacific chorus frog | 52 |
In Montana, September carries 9.4% of the year's tree frogs sightings, about 1.1 points above an even month-to-month split. That makes it the 6th busiest of the twelve months, out of 9 months with recorded activity.
Activity is easing off from August (12.5%) into September, and it heads toward October (2.5%) after. The busiest month is May (27.5%), so if timing is flexible, that window is the safer bet.
The tree frogs most often recorded in Montana are Boreal Chorus Frog and Pacific chorus frog. 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
- Boreal Chorus Frog106 records
- Pacific chorus frog52 records
Plan your tree frog trip in Montana
Start with live tours near Big Hole National Battlefield, 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 Big Hole National Battlefield
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 Big Hole National Battlefield
Compare hotels, cabins and lodges close to the best tree frog viewing area in Montana.
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Broader backupBook a tree frog tour in Montana
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Frequently asked questions
Can you see tree frogs in Montana in September?+
Yes. September accounts for 15 of the 160 verified tree frogs sightings logged in Montana across the year, which is 9.4% of the annual total.
Is September a good time to see tree frogs in Montana?+
September is the 6th 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 Montana?+
May is the single busiest month, with the broader peak running through May, June and July, based on 160 verified observations.
Which tree frogs are you most likely to see in Montana?+
The most-recorded species in Montana are Boreal Chorus Frog and Pacific chorus frog, based on all-time iNaturalist counts.
See tree frogs in Montana in other months
More places to see tree frogs
More wildlife in Montana