FleaDates › Tick season › Rhode Island
Northeast · RI
When are ticks active in Rhode Island?
Ticks in Rhode Island are typically active mid-March to early December, heaviest May–Oct — and adult blacklegged ticks can surface on any mild winter day.
Ticks to know in Rhode Island
Rhode Island sits squarely in the Lyme belt, and blacklegged ticks are active here from mid-March all the way to early December, hitting hardest May through October. South County's coastal scrub and stone-wall woodlands are classic habitat, with American dog ticks common in summer fields and lone star ticks showing up more often near the shore. In a state this compact, most dogs are never far from good tick habitat, which makes an after-walk check a smart daily ritual.
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 Rhode Island
| Month | Typical activity | Average temperature |
|---|---|---|
| January | Quiet | 30.2°F |
| February | Quiet | 32°F |
| March | Low | 38.9°F |
| April | Moderate | 49.3°F |
| May | High | 59.1°F |
| June | Peak | 68.2°F |
| July | Peak | 74.4°F |
| August | Peak | 73°F |
| September | Peak | 65.6°F |
| October | High | 54.4°F |
| November | Moderate | 44.5°F |
| December | Low | 35.5°F |
Estimates from NOAA U.S. Climate Normals (1991–2020), averaged across 1 weather station near Rhode Island'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. Rhode Island flea season typically runs mid-April to early November — see the Rhode Island flea season page.
Frequently asked questions
When does tick season start in Rhode Island?
Around mid-March in a typical year, once temperatures clear roughly 40°F — noticeably earlier than flea season. A February thaw can bring ticks out ahead of schedule.
What ticks live in Rhode Island?
The species dog owners most often meet in Rhode Island: blacklegged (deer) tick, American dog tick, lone star tick. Rhode Island sits squarely in the Lyme belt, and blacklegged ticks are active here from mid-March all the way to early December, hitting hardest May through October. South County's coastal scrub and stone-wall woodlands are classic habitat, with American dog ticks common in summer fields and lone star ticks showing up more often near the shore. In a state this compact, most dogs are never far from good tick habitat, which makes an after-walk check a smart daily ritual.
Do I need tick prevention in winter in Rhode Island?
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 Rhode Island?
Fleas run on a warmer calendar — in Rhode Island that's mid-April to early November. See the Rhode Island flea season page for that month-by-month picture.