When Does Tick Season Start in New York?

In New York, ticks become active whenever temperatures rise above freezing for a stretch. That means activity can begin in March, sometimes earlier during a mild winter, and continue into late fall.

The seasonal pattern

• Spring: adult blacklegged ticks are active early; nymphs begin emerging as temperatures rise.
• Late spring through summer: nymphal blacklegged ticks are most active, and because they are poppy-seed sized, they account for a large share of bites.
• Fall: adult blacklegged ticks become active again and stay out well past the first frost.
• Winter: activity drops but is not zero during thaws.

Why the Hudson Valley matters here

The Lower Hudson Valley is a well-documented high-incidence region for Lyme disease in New York State. Deer and white-footed mouse populations, along with woodland bordering residential neighborhoods, sustain tick numbers close to where people live.

Most residential exposure happens in the yard — particularly along the woodline, in leaf litter, around stone walls and in shaded ground cover.

Reducing exposure at home

• Keep grass short and clear leaf litter, especially at the woodline.
• Add a wood chip or gravel border between lawn and forest edge.
• Move play sets and seating areas away from brushy edges.
• Use veterinarian-recommended tick control for pets and check people and pets after time outside.

For symptoms and tick removal guidance, follow New York State Department of Health recommendations and consult a physician if you develop a rash or flu-like illness after a bite.