Best Time to See Brown Recluses in Utah
September is the best time to see brown recluses in Utah. Based on 1 verified iNaturalist observations, here is exactly when brown recluses are most active across the year in Utah.
By Tim, founder of Easy Street Markets. I maintain the wildlife database and verify every animal and source myself. Updated July 21, 2026.
1 verified observations of brown recluses in Utah, recorded across 1 months of the year on iNaturalist.
When brown recluses are recorded in Utah
Peak month
September
1 records (100% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 0 | 0% |
| February | 0 | 0% |
| March | 0 | 0% |
| April | 0 | 0% |
| May | 0 | 0% |
| June | 0 | 0% |
| July | 0 | 0% |
| August | 0 | 0% |
| Septemberpeak | 1 | 100% |
| October | 0 | 0% |
| November | 0 | 0% |
| December | 0 | 0% |
Brown Recluses you are most likely to see
| Species | Verified observations |
|---|---|
| Brown Recluse | 1 |
Weather to expect, source Open-Meteo
Typical weather in Utah
Recent typical conditions by month, so you can plan a trip around both when brown recluses are active and what the weather is doing. The best months to look for brown recluses sit around 52 to 78 degrees Fahrenheit, so pack for that.
| Month | Avg high | Avg low | Rain |
|---|---|---|---|
| Jan | 33°F | 19°F | 1.5" |
| Feb | 35°F | 20°F | 1.5" |
| Mar | 43°F | 27°F | 2.8" |
| Apr | 55°F | 33°F | 1.6" |
| May | 66°F | 42°F | 1.3" |
| Jun | 79°F | 53°F | 0.7" |
| Jul | 89°F | 62°F | 0.3" |
| Aug | 87°F | 61°F | 0.3" |
| Sepbest time | 78°F | 52°F | 0.6" |
| Oct | 62°F | 38°F | 1.1" |
| Nov | 48°F | 28°F | 1.3" |
| Dec | 36°F | 20°F | 2.6" |
Typical recent conditions (5-year means) from the Open-Meteo archive, averaged for Utah. Weather varies year to year, so treat these as a guide.
More on brown recluses in Utah:
Sightings of brown recluses in Utah peak in September, when 1 of the year's 1 verified observations are logged — about 100% of the annual total.
The quietest stretch is January, February and March, when brown recluses 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 brown recluses you are most likely to encounter in Utah are Brown Recluse — 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.
Frequently asked questions
What is the best month to see brown recluses in Utah?+
September is the single best month, and the broader peak window runs through September, based on 1 verified iNaturalist observations.
When are brown recluses hardest to see in Utah?+
January is the quietest month for brown recluses in Utah, with no verified records on iNaturalist.
Are brown recluses active year-round in Utah?+
Brown recluses are recorded in 1 of 12 months in Utah, concentrated around September.
More places to see brown recluses
More wildlife in Utah