Best Time to See Black Widows in South Dakota
September, May and June is the best time to see black widows in South Dakota. Based on 50 verified iNaturalist observations, here is exactly when black widows 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 July 22, 2026.
Northern Black Widow · Joseph McPhail CC BY
Western Black Widow · Rebecca Ray CC BY
Western Black Widow · Michael Eisen CC BY
50 verified observations of black widows in South Dakota, recorded across 7 months of the year on iNaturalist.
When black widows are recorded in South Dakota
Peak month
September
14 records (28% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 0 | 0% |
| February | 0 | 0% |
| March | 0 | 0% |
| April | 0 | 0% |
| Maypeak | 8 | 16% |
| Junepeak | 8 | 16% |
| July | 5 | 10% |
| August | 8 | 16% |
| Septemberpeak | 14 | 28% |
| October | 4 | 8% |
| November | 3 | 6% |
| December | 0 | 0% |
Black Widows you are most likely to see
| Species | Verified observations |
|---|---|
| Western Black Widow | 47 |
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 black widows are active and what the weather is doing. The best months to look for black widows sit around 49 to 84 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" |
| Maybest time | 68°F | 49°F | 3.7" |
| Junbest time | 84°F | 63°F | 2.2" |
| Jul | 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.
Sightings of black widows in South Dakota peak in September, when 14 of the year's 50 verified observations are logged — about 28% of the annual total. Activity stays high through September, May and June.
The quietest stretch is January, February and March, when black widows 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 black widows you are most likely to encounter in South Dakota are Western Black Widow — 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 black widows 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 black widows in South Dakota?+
September is the single best month, and the broader peak window runs through September, May and June, based on 50 verified iNaturalist observations.
When are black widows hardest to see in South Dakota?+
January is the quietest month for black widows in South Dakota, with no verified records on iNaturalist.
Are black widows active year-round in South Dakota?+
Black widows are recorded in 7 of 12 months in South Dakota, concentrated around September and May.
More places to see black widows
More wildlife in South Dakota