Best Time to See Mountain Goats in South Dakota
September, June and July is the best time to see mountain goats in South Dakota. Based on 405 verified iNaturalist observations, here is exactly when mountain goats are most active across the year in South Dakota.
By Tim, founder of Easy Street Markets. I maintain the wildlife database and verify every animal and source myself. Updated June 28, 2026.
405 verified observations of mountain goats in South Dakota, recorded across 11 months of the year on iNaturalist.
When mountain goats are recorded in South Dakota
Peak month
September
77 records (19% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 2 | 0.5% |
| February | 0 | 0% |
| March | 15 | 3.7% |
| April | 23 | 5.7% |
| May | 45 | 11.1% |
| Junepeak | 72 | 17.8% |
| Julypeak | 61 | 15.1% |
| August | 48 | 11.9% |
| Septemberpeak | 77 | 19% |
| October | 48 | 11.9% |
| November | 11 | 2.7% |
| December | 3 | 0.7% |
Mountain Goats you are most likely to see
| Species | Verified observations |
|---|---|
| Mountain Goat | 405 |
Weather to expect, source Open-Meteo
Typical weather in South Dakota
Recent typical conditions by month, so you can plan a trip around both when mountain goats are active and what the weather is doing. The best months to look for mountain goats sit around 58 to 87 degrees Fahrenheit, so pack for that.
| Month | Avg high | Avg low | Rain |
|---|---|---|---|
| Jan | 31°F | 16°F | 0.5" |
| Feb | 31°F | 11°F | 0.7" |
| Mar | 44°F | 25°F | 1.6" |
| Apr | 54°F | 34°F | 2.4" |
| May | 68°F | 49°F | 3.7" |
| Junbest time | 84°F | 63°F | 2.2" |
| Julbest time | 87°F | 67°F | 2.5" |
| Aug | 86°F | 66°F | 1.6" |
| Sepbest time | 78°F | 58°F | 2.1" |
| Oct | 58°F | 40°F | 2" |
| Nov | 46°F | 29°F | 0.8" |
| Dec | 35°F | 19°F | 1.3" |
Typical recent conditions (5-year means) from the Open-Meteo archive, averaged for South Dakota. Weather varies year to year, so treat these as a guide.
More on mountain goats in South Dakota:
Sightings of mountain goats in South Dakota peak in September, when 77 of the year's 405 verified observations are logged — about 19% of the annual total. Activity stays high through September, June and July.
The quietest stretch is February, when mountain goats are hardest to find — no verified records exist for February. If a reliable sighting matters, plan around the peak window rather than the off-season.
The mountain goats you are most likely to encounter in South Dakota are Mountain Goat — 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 mountain goats in South Dakota
- Badlands National Park — National Park
- Jewel Cave National Monument — National Monument
- Lewis & Clark National Historic Trail — National Historic Trail
- Missouri National Recreational River — National Recreational River
- Wind Cave National Park — National Park
- Minuteman Missile National Historic Site — National Historic Site
Frequently asked questions
What is the best month to see mountain goats in South Dakota?+
September is the single best month, and the broader peak window runs through September, June and July, based on 405 verified iNaturalist observations.
When are mountain goats hardest to see in South Dakota?+
February is the quietest month for mountain goats in South Dakota, with no verified records on iNaturalist.
Are mountain goats active year-round in South Dakota?+
Mountain goats are recorded in 11 of 12 months in South Dakota, so they can be seen year-round, with a clear peak in September.
More places to see mountain goats
More wildlife in South Dakota