Ticks in Wisconsin

Weather-driven ticks risk forecasts for Wisconsin cities and counties.

Ticks are a significant health concern in Wisconsin, carrying Lyme disease, anaplasmosis, and other tick-borne illnesses. Our tick risk forecasts track weather conditions that directly influence tick activity and questing behavior.

Seasonal Pattern

Wisconsin tick season typically begins in April when temperatures consistently reach 45°F and extends through October. Peak activity occurs in late spring and early summer, with a secondary peak in fall. Blacklegged (deer) ticks and American dog ticks are the most common species.

Weather Influence

Tick activity is primarily driven by temperature and humidity. They thrive when temperatures are between 45-80°F and humidity is above 70%. Recent rainfall increases ground moisture, keeping leaf litter damp — the ideal tick habitat. Low humidity and extreme heat suppress activity.

Current Ticks Risk by Location

Location County Score Risk Level
Kenosha — 90 SEVERE View →
Mequon — 90 SEVERE View →
Whitefish Bay — 90 SEVERE View →
Fox Point — 90 SEVERE View →
River Hills — 90 SEVERE View →
Cedarburg — 90 SEVERE View →
Racine — 80 SEVERE View →
Grafton — 80 SEVERE View →
Milwaukee — 75 HIGH View →
Brookfield — 75 HIGH View →
New Berlin — 75 HIGH View →
Menomonee Falls — 75 HIGH View →
Germantown — 75 HIGH View →
Elm Grove — 75 HIGH View →
Sheboygan — 65 HIGH View →
Mount Pleasant — 65 HIGH View →
Franklin — 60 HIGH View →
Oak Creek — 60 HIGH View →
Muskego — 60 HIGH View →
West Allis — 60 HIGH View →
Pleasant Prairie — 60 HIGH View →
Waukesha — 50 MODERATE View →
Oshkosh — 50 MODERATE View →
La Crosse — 50 MODERATE View →
Janesville — 50 MODERATE View →
Fitchburg — 50 MODERATE View →
Sun Prairie — 50 MODERATE View →
Middleton — 50 MODERATE View →
Verona — 50 MODERATE View →
Waunakee — 50 MODERATE View →
Neenah — 50 MODERATE View →
Menasha — 50 MODERATE View →
Mukwonago — 50 MODERATE View →
Oconomowoc — 50 MODERATE View →
Delafield — 50 MODERATE View →
Hartland — 50 MODERATE View →
Pewaukee — 50 MODERATE View →
Merton — 50 MODERATE View →
Sussex — 50 MODERATE View →
Caledonia — 50 MODERATE View →
Cottage Grove — 50 MODERATE View →
DeForest — 50 MODERATE View →
Stoughton — 50 MODERATE View →
Oregon — 50 MODERATE View →
Lake Geneva — 50 MODERATE View →
Watertown — 50 MODERATE View →
Fort Atkinson — 50 MODERATE View →
Beloit — 50 MODERATE View →
Altoona — 50 MODERATE View →
New Richmond — 50 MODERATE View →
Baraboo — 50 MODERATE View →
Madison — 45 MODERATE View →
Green Bay — 40 MODERATE View →
Appleton — 40 MODERATE View →
Kaukauna — 40 MODERATE View →
Marshfield — 40 MODERATE View →
Eau Claire — 35 MODERATE View →
Hudson — 35 MODERATE View →
Wausau — 25 LOW View →

How We Calculate Risk Scores

Our scoring engine analyzes real-time weather data including temperature, humidity, rainfall, soil conditions, and wind. Each pest has a unique model calibrated to its behavioral patterns. Scores update every 3 hours. Learn more about our methodology

Ticks FAQ

What is the ticks risk in Wisconsin right now?
Tick risk varies by location based on current weather conditions. Use the table below to see scores for specific cities. Risk levels range from Low (0-29) to Severe (80-100).
Wisconsin tick season typically begins in April when temperatures consistently reach 45°F and extends through October. Peak activity occurs in late spring and early summer, with a secondary peak in fall. Blacklegged (deer) ticks and American dog ticks are the most common species.
Tick activity is primarily driven by temperature and humidity. They thrive when temperatures are between 45-80°F and humidity is above 70%. Recent rainfall increases ground moisture, keeping leaf litter damp — the ideal tick habitat. Low humidity and extreme heat suppress activity.

Ticks a Problem?

Connect with a Wisconsin pest specialist who can inspect and treat your property.

(217) 993-8391