Best Time to See Black Widows in Oregon
September, May and July is the best time to see black widows in Oregon. Based on 476 verified iNaturalist observations, here is exactly when black widows are most active across the year in Oregon.
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
476 verified observations of black widows in Oregon, recorded across 12 months of the year on iNaturalist.
When black widows are recorded in Oregon
Peak month
September
70 records (14.7% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 8 | 1.7% |
| February | 6 | 1.3% |
| March | 23 | 4.8% |
| April | 42 | 8.8% |
| Maypeak | 68 | 14.3% |
| June | 55 | 11.6% |
| Julypeak | 62 | 13% |
| August | 53 | 11.1% |
| Septemberpeak | 70 | 14.7% |
| October | 56 | 11.8% |
| November | 23 | 4.8% |
| December | 10 | 2.1% |
Black Widows you are most likely to see
| Species | Verified observations |
|---|---|
| Western Black Widow | 461 |
| Brown Widow | 1 |
| Northern Black Widow | 1 |
Weather to expect, source Open-Meteo
Typical weather in Oregon
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 40 to 83 degrees Fahrenheit, so pack for that.
| Month | Avg high | Avg low | Rain |
|---|---|---|---|
| Jan | 39°F | 26°F | 2" |
| Feb | 38°F | 22°F | 2.4" |
| Mar | 43°F | 25°F | 1.9" |
| Apr | 52°F | 32°F | 2.2" |
| Maybest time | 61°F | 40°F | 2" |
| Jun | 71°F | 48°F | 1.1" |
| Julbest time | 83°F | 56°F | 0.1" |
| Aug | 81°F | 56°F | 0.4" |
| Sepbest time | 71°F | 47°F | 1.2" |
| Oct | 58°F | 37°F | 1.2" |
| Nov | 45°F | 28°F | 2.3" |
| Dec | 37°F | 25°F | 2.4" |
Typical recent conditions (5-year means) from the Open-Meteo archive, averaged for Oregon. Weather varies year to year, so treat these as a guide.
Sightings of black widows in Oregon peak in September, when 70 of the year's 476 verified observations are logged — about 14.7% of the annual total. Activity stays high through September, May and July.
The quietest stretch is February and January, when black widows are hardest to find — February sees just 6 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 Oregon are Western Black Widow, Brown 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 Oregon
- Crater Lake National Park — National Park
- Fort Vancouver National Historic Site — National Historic Site
- Lewis & Clark National Historic Trail — National Historic Trail
- Lewis and Clark National Historical Park — National Historical Park
- Nez Perce National Historical Park — National Historical Park
- Oregon Caves National Monument & Preserve — National Monument & Preserve
Frequently asked questions
What is the best month to see black widows in Oregon?+
September is the single best month, and the broader peak window runs through September, May and July, based on 476 verified iNaturalist observations.
When are black widows hardest to see in Oregon?+
February is the quietest month for black widows in Oregon, with only 6 verified records.
Are black widows active year-round in Oregon?+
Black widows are recorded in 12 of 12 months in Oregon, so they can be seen year-round, with a clear peak in September.
More wildlife in Oregon