Best Time to See Black Widows in Wisconsin
June, July and May is the best time to see black widows in Wisconsin. Based on 101 verified iNaturalist observations, here is exactly when black widows are most active across the year in Wisconsin.
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
101 verified observations of black widows in Wisconsin, recorded across 8 months of the year on iNaturalist.
When black widows are recorded in Wisconsin
Peak month
June
79 records (78.2% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 0 | 0% |
| February | 0 | 0% |
| March | 0 | 0% |
| April | 1 | 1% |
| Maypeak | 7 | 6.9% |
| Junepeak | 79 | 78.2% |
| Julypeak | 8 | 7.9% |
| August | 2 | 2% |
| September | 2 | 2% |
| October | 1 | 1% |
| November | 1 | 1% |
| December | 0 | 0% |
Black Widows you are most likely to see
| Species | Verified observations |
|---|---|
| Northern Black Widow | 97 |
| Brown Widow | 1 |
Weather to expect, source Open-Meteo
Typical weather in Wisconsin
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 45 to 80 degrees Fahrenheit, so pack for that.
| Month | Avg high | Avg low | Rain |
|---|---|---|---|
| Jan | 25°F | 10°F | 1.4" |
| Feb | 25°F | 7°F | 2" |
| Mar | 40°F | 21°F | 2.7" |
| Apr | 52°F | 32°F | 3.9" |
| Maybest time | 65°F | 45°F | 3.4" |
| Junbest time | 77°F | 57°F | 3.8" |
| Julbest time | 80°F | 61°F | 3.5" |
| Aug | 77°F | 60°F | 3.5" |
| Sep | 70°F | 53°F | 3" |
| Oct | 55°F | 40°F | 3.3" |
| Nov | 41°F | 27°F | 2.4" |
| Dec | 32°F | 17°F | 1.9" |
Typical recent conditions (5-year means) from the Open-Meteo archive, averaged for Wisconsin. Weather varies year to year, so treat these as a guide.
Sightings of black widows in Wisconsin peak in June, when 79 of the year's 101 verified observations are logged — about 78.2% of the annual total. Activity stays high through June, July and May.
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 Wisconsin are Northern Black Widow and Brown 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 Wisconsin
- Apostle Islands National Lakeshore — National Lakeshore
- Ice Age National Scenic Trail — National Scenic Trail
- North Country National Scenic Trail — National Scenic Trail
- Saint Croix National Scenic Riverway — National Scenic Riverway
Frequently asked questions
What is the best month to see black widows in Wisconsin?+
June is the single best month, and the broader peak window runs through June, July and May, based on 101 verified iNaturalist observations.
When are black widows hardest to see in Wisconsin?+
January is the quietest month for black widows in Wisconsin, with no verified records on iNaturalist.
Are black widows active year-round in Wisconsin?+
Black widows are recorded in 8 of 12 months in Wisconsin, concentrated around June and July.