FleaDates › Tick season › Tennessee
Southeast · TN
When are ticks active in Tennessee?
Tennessee ticks don't take a real winter break: average temperatures stay above the ~40°F questing threshold in every month, with pressure heaviest Mar–Oct.
Ticks to know in Tennessee
Middle and West Tennessee are lone star tick strongholds — these fast-moving biters account for most tick encounters from spring into early fall. American dog ticks are the other summer regular, and blacklegged ticks pick up in autumn and linger through the state's mild winters, which is why the tick window never fully closes. March through October demands the most vigilance on trails around Knoxville and Chattanooga.
Wherever the calendar sits this month, the habit that actually catches ticks is the after-walk check: ears, collar line, armpits, between the toes. Prevention plus checks beats either alone.
Month-by-month tick activity in Tennessee
| Month | Typical activity | Average temperature |
|---|---|---|
| January | Moderate | 40.6°F |
| February | Moderate | 44.5°F |
| March | High | 52.4°F |
| April | High | 61.3°F |
| May | Peak | 69.8°F |
| June | Peak | 77.4°F |
| July | Peak | 80.7°F |
| August | Peak | 79.9°F |
| September | Peak | 73.7°F |
| October | Peak | 62.3°F |
| November | Moderate | 50.8°F |
| December | Moderate | 43.4°F |
Estimates from NOAA U.S. Climate Normals (1991–2020), averaged across 4 weather stations near Tennessee's larger cities, using the ~40°F activity threshold reported in published tick research. Real years run early or late with the weather.
Fleas peak later. Tennessee flea season typically runs late February to late November — see the Tennessee flea season page.
Frequently asked questions
When does tick season start in Tennessee?
It never fully stops. Tennessee's average temperatures sit above the ~40°F questing threshold all year, so tick checks and prevention are a twelve-month routine, with extra vigilance Mar–Oct.
What ticks live in Tennessee?
The species dog owners most often meet in Tennessee: lone star tick, American dog tick, blacklegged (deer) tick. Middle and West Tennessee are lone star tick strongholds — these fast-moving biters account for most tick encounters from spring into early fall. American dog ticks are the other summer regular, and blacklegged ticks pick up in autumn and linger through the state's mild winters, which is why the tick window never fully closes. March through October demands the most vigilance on trails around Knoxville and Chattanooga.
Do I need tick prevention in winter in Tennessee?
Yes. Ticks overwinter under leaf litter and snow rather than dying off, and mild spells wake them — which is why veterinary organizations recommend year-round parasite prevention. The calendar shows when pressure peaks, not when protection can lapse.
What about fleas in Tennessee?
Fleas run on a warmer calendar — in Tennessee that's late February to late November. See the Tennessee flea season page for that month-by-month picture.