There are 165 recorded sightings of Timber Rattlesnake in Illinois, with 23 observations documented in the past 12 months. Local sightings are most frequently reported in July through October.
When to See Timber Rattlesnake in Illinois
Most often reported in July through October.
| Month | Recorded Sightings | Peak Month |
|---|---|---|
| January | 0 | No |
| February | 0 | No |
| March | 1 | No |
| April | 26 | No |
| May | 21 | No |
| June | 15 | No |
| July | 9 | Yes |
| August | 21 | Yes |
| September | 32 | Yes |
| October | 39 | Yes |
| November | 0 | No |
| December | 0 | No |
Compared With Other Regions
Explore how Timber Rattlesnake sightings in Illinois compare to other North American hubs:
Yellowish to gray with dark crossbands and a black tail, this large venomous snake lives in forests and rocky ridges of the eastern United States. It dens in rock crevices in winter. Look near sunny ledges in spring, when it basks close to dens, and keep a safe distance if you find one.
Other Wildlife to Look for in Illinois
Track Timber Rattlesnake in Illinois
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Frequently Asked Questions
When is the best time to see a Timber Rattlesnake in Illinois?
Timber Rattlesnake is most often reported in Illinois in July through October, based on GBIF records. Reports partly reflect when more people are outdoors, so sightings in other months are possible.
Where can I see a Timber Rattlesnake in Illinois?
There are 165 documented Timber Rattlesnake records in Illinois. Parks, refuges and protected areas with suitable habitat are the best places to start; the charts above show when it's reported most.
How can I find Timber Rattlesnake sightings near me in Illinois?
Use the WildMap app on iOS to see recent reports within 100 km from the past 7 days for free (WildMap Pro: 200 km and 30 days), and turn on alerts for sightings near you in Illinois.