Best Time to See Black Widows in Delaware
September, October and August is the best time to see black widows in Delaware. Based on 294 verified iNaturalist observations, here is exactly when black widows are most active across the year in Delaware.
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
294 verified observations of black widows in Delaware, recorded across 12 months of the year on iNaturalist.
When black widows are recorded in Delaware
Peak month
September
70 records (23.8% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 3 | 1% |
| February | 4 | 1.4% |
| March | 8 | 2.7% |
| April | 15 | 5.1% |
| May | 35 | 11.9% |
| June | 31 | 10.5% |
| July | 37 | 12.6% |
| Augustpeak | 39 | 13.3% |
| Septemberpeak | 70 | 23.8% |
| Octoberpeak | 40 | 13.6% |
| November | 9 | 3.1% |
| December | 3 | 1% |
Black Widows you are most likely to see
| Species | Verified observations |
|---|---|
| Southern Black Widow | 178 |
| Northern Black Widow | 79 |
Weather to expect, source Open-Meteo
Typical weather in Delaware
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 55 to 83 degrees Fahrenheit, so pack for that.
| Month | Avg high | Avg low | Rain |
|---|---|---|---|
| Jan | 44°F | 32°F | 2.9" |
| Feb | 47°F | 33°F | 3.8" |
| Mar | 54°F | 39°F | 3.8" |
| Apr | 63°F | 48°F | 4.5" |
| May | 70°F | 56°F | 3.9" |
| Jun | 79°F | 66°F | 3.9" |
| Jul | 86°F | 73°F | 6" |
| Augbest time | 83°F | 72°F | 5.1" |
| Sepbest time | 77°F | 65°F | 4.3" |
| Octbest time | 68°F | 55°F | 4.4" |
| Nov | 56°F | 43°F | 2.8" |
| Dec | 48°F | 36°F | 4.8" |
Typical recent conditions (5-year means) from the Open-Meteo archive, averaged for Delaware. Weather varies year to year, so treat these as a guide.
Sightings of black widows in Delaware peak in September, when 70 of the year's 294 verified observations are logged — about 23.8% of the annual total. Activity stays high through September, October and August.
The quietest stretch is January, December and February, when black widows are hardest to find — January sees just 3 records. 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 Delaware are Southern Black Widow and Northern 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 Delaware
- Captain John Smith Chesapeake National Historic Trail — National Historic Trail
- Chesapeake Bay
- First State National Historical Park — National Historical Park
- Washington-Rochambeau Revolutionary Route National Historic Trail — National Historic Trail
Frequently asked questions
What is the best month to see black widows in Delaware?+
September is the single best month, and the broader peak window runs through September, October and August, based on 294 verified iNaturalist observations.
When are black widows hardest to see in Delaware?+
January is the quietest month for black widows in Delaware, with only 3 verified records.
Are black widows active year-round in Delaware?+
Black widows are recorded in 12 of 12 months in Delaware, so they can be seen year-round, with a clear peak in September.
More wildlife in Delaware