Best Time to See Lone Star Ticks in Illinois
June, May and April is the best time to see lone star ticks in Illinois. Based on 423 verified iNaturalist observations, here is exactly when lone star ticks are most active across the year in Illinois.
By Tim, founder of Easy Street Markets. I maintain the wildlife database and verify every animal and source myself. Updated July 22, 2026.
Lone Star Tick · Jeff Clark CC BY
Lone Star Tick · Katja Schulz CC BY
Lone Star Tick · Public domain CC0
423 verified observations of lone star ticks in Illinois, recorded across 7 months of the year on iNaturalist.
When lone star ticks are recorded in Illinois
Peak month
June
143 records (33.8% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 0 | 0% |
| February | 0 | 0% |
| March | 18 | 4.3% |
| Aprilpeak | 75 | 17.7% |
| Maypeak | 118 | 27.9% |
| Junepeak | 143 | 33.8% |
| July | 50 | 11.8% |
| August | 13 | 3.1% |
| September | 6 | 1.4% |
| October | 0 | 0% |
| November | 0 | 0% |
| December | 0 | 0% |
Lone Star Ticks you are most likely to see
| Species | Verified observations |
|---|---|
| Lone Star Tick | 423 |
Weather to expect, source Open-Meteo
Typical weather in Illinois
Recent typical conditions by month, so you can plan a trip around both when lone star ticks are active and what the weather is doing. The best months to look for lone star ticks sit around 43 to 83 degrees Fahrenheit, so pack for that.
| Month | Avg high | Avg low | Rain |
|---|---|---|---|
| Jan | 38°F | 23°F | 3" |
| Feb | 40°F | 22°F | 3.1" |
| Mar | 53°F | 34°F | 4.8" |
| Aprbest time | 63°F | 43°F | 4.1" |
| Maybest time | 73°F | 54°F | 4.6" |
| Junbest time | 83°F | 64°F | 3.5" |
| Jul | 85°F | 68°F | 4.3" |
| Aug | 83°F | 66°F | 3.9" |
| Sep | 79°F | 61°F | 3" |
| Oct | 65°F | 48°F | 4.9" |
| Nov | 52°F | 35°F | 1.8" |
| Dec | 45°F | 29°F | 2.3" |
Typical recent conditions (5-year means) from the Open-Meteo archive, averaged for Illinois. Weather varies year to year, so treat these as a guide.
Sightings of lone star ticks in Illinois peak in June, when 143 of the year's 423 verified observations are logged — about 33.8% of the annual total. Activity stays high through June, May and April.
The quietest stretch is January, February and October, when lone star ticks 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 lone star ticks you are most likely to encounter in Illinois are Lone Star Tick — 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 lone star ticks in Illinois
- Lewis & Clark National Historic Trail — National Historic Trail
- Lincoln Home National Historic Site — National Historic Site
- Emmett Till and Mamie Till-Mobley National Monument — National Monument
- Mormon Pioneer National Historic Trail — National Historic Trail
- New Philadelphia National Historic Site — National Historic Site
- Pullman National Historical Park — National Historical Park
Frequently asked questions
What is the best month to see lone star ticks in Illinois?+
June is the single best month, and the broader peak window runs through June, May and April, based on 423 verified iNaturalist observations.
When are lone star ticks hardest to see in Illinois?+
January is the quietest month for lone star ticks in Illinois, with no verified records on iNaturalist.
Are lone star ticks active year-round in Illinois?+
Lone star ticks are recorded in 7 of 12 months in Illinois, concentrated around June and May.
More wildlife in Illinois