Best Time to See Black Widows in Nevada
September, August and October is the best time to see black widows in Nevada. Based on 693 verified iNaturalist observations, here is exactly when black widows are most active across the year in Nevada.
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
693 verified observations of black widows in Nevada, recorded across 12 months of the year on iNaturalist.
When black widows are recorded in Nevada
Peak month
September
110 records (15.9% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 9 | 1.3% |
| February | 17 | 2.5% |
| March | 30 | 4.3% |
| April | 54 | 7.8% |
| May | 53 | 7.6% |
| June | 92 | 13.3% |
| July | 81 | 11.7% |
| Augustpeak | 104 | 15% |
| Septemberpeak | 110 | 15.9% |
| Octoberpeak | 93 | 13.4% |
| November | 42 | 6.1% |
| December | 8 | 1.2% |
Black Widows you are most likely to see
| Species | Verified observations |
|---|---|
| Western Black Widow | 661 |
| Brown Widow | 3 |
Weather to expect, source Open-Meteo
Typical weather in Nevada
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 36 to 79 degrees Fahrenheit, so pack for that.
| Month | Avg high | Avg low | Rain |
|---|---|---|---|
| Jan | 31°F | 16°F | 1.2" |
| Feb | 32°F | 16°F | 0.9" |
| Mar | 37°F | 21°F | 1.6" |
| Apr | 51°F | 31°F | 0.6" |
| May | 60°F | 39°F | 1.1" |
| Jun | 72°F | 50°F | 0.3" |
| Jul | 82°F | 59°F | 0.3" |
| Augbest time | 79°F | 57°F | 1.2" |
| Sepbest time | 71°F | 50°F | 0.6" |
| Octbest time | 57°F | 36°F | 0.2" |
| Nov | 44°F | 26°F | 0.8" |
| Dec | 33°F | 18°F | 1.2" |
Typical recent conditions (5-year means) from the Open-Meteo archive, averaged for Nevada. Weather varies year to year, so treat these as a guide.
Sightings of black widows in Nevada peak in September, when 110 of the year's 693 verified observations are logged — about 15.9% of the annual total. Activity stays high through September, August and October.
The quietest stretch is December and January, when black widows are hardest to find — December sees just 8 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 Nevada are Western 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 Nevada
- Death Valley National Park — National Park
- Great Basin National Park — National Park
- Lake Mead National Recreation Area — National Recreation Area
- Tule Springs Fossil Beds National Monument — National Monument
- California National Historic Trail — National Historic Trail
- Old Spanish National Historic Trail — National Historic Trail
Frequently asked questions
What is the best month to see black widows in Nevada?+
September is the single best month, and the broader peak window runs through September, August and October, based on 693 verified iNaturalist observations.
When are black widows hardest to see in Nevada?+
December is the quietest month for black widows in Nevada, with only 8 verified records.
Are black widows active year-round in Nevada?+
Black widows are recorded in 12 of 12 months in Nevada, so they can be seen year-round, with a clear peak in September.
More places to see black widows
More wildlife in Nevada