Spiders in Wisconsin

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

Spider sightings in Wisconsin homes peak in fall when males wander seeking mates, and during damp conditions that increase insect prey. Our spider forecasts identify weather conditions driving indoor spider encounters.

Seasonal Pattern

Spiders are active in Wisconsin from spring through fall, with indoor sightings peaking September through November. Wolf spiders, common house spiders, and occasional brown recluse sightings are reported statewide. Males actively seek mates in autumn, increasing indoor encounters.

Weather Influence

Spider activity is linked to temperature (50-80°F activity range), humidity, and rainfall. Moist conditions attract the insects spiders feed on, increasing spider populations near homes. Cooling fall temperatures push spiders indoors seeking warmth. Low wind favors web construction.

Current Spiders Risk by Location

Location County Score Risk Level
Madison — 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 →
Pleasant Prairie — 50 MODERATE View →
DeForest — 50 MODERATE View →
Stoughton — 50 MODERATE View →
Oregon — 50 MODERATE View →
Lake Geneva — 50 MODERATE View →
Beloit — 50 MODERATE View →
La Crosse — 37 MODERATE View →
Kenosha — 25 LOW View →
Racine — 25 LOW View →
Waukesha — 25 LOW View →
Wausau — 25 LOW View →
Brookfield — 25 LOW View →
New Berlin — 25 LOW View →
Menomonee Falls — 25 LOW View →
Franklin — 25 LOW View →
Oak Creek — 25 LOW View →
Muskego — 25 LOW View →
Germantown — 25 LOW View →
Mukwonago — 25 LOW View →
Oconomowoc — 25 LOW View →
Delafield — 25 LOW View →
Hartland — 25 LOW View →
Pewaukee — 25 LOW View →
Merton — 25 LOW View →
Sussex — 25 LOW View →
Elm Grove — 25 LOW View →
Caledonia — 25 LOW View →
Mount Pleasant — 25 LOW View →
Cottage Grove — 25 LOW View →
Watertown — 25 LOW View →
Fort Atkinson — 25 LOW View →
Baraboo — 25 LOW View →
Marshfield — 25 LOW View →
Oshkosh — 17 LOW View →
New Richmond — 17 LOW View →
Green Bay — 15 LOW View →
Kaukauna — 15 LOW View →
Milwaukee — 5 LOW View →
Appleton — 5 LOW View →
Eau Claire — 5 LOW View →
Sheboygan — 5 LOW View →
Mequon — 5 LOW View →
West Allis — 5 LOW View →
Neenah — 5 LOW View →
Menasha — 5 LOW View →
Whitefish Bay — 5 LOW View →
Fox Point — 5 LOW View →
River Hills — 5 LOW View →
Cedarburg — 5 LOW View →
Grafton — 5 LOW View →
Altoona — 5 LOW View →
Hudson — 5 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

Spiders FAQ

What is the spiders risk in Wisconsin right now?
Spider 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).
Spiders are active in Wisconsin from spring through fall, with indoor sightings peaking September through November. Wolf spiders, common house spiders, and occasional brown recluse sightings are reported statewide. Males actively seek mates in autumn, increasing indoor encounters.
Spider activity is linked to temperature (50-80°F activity range), humidity, and rainfall. Moist conditions attract the insects spiders feed on, increasing spider populations near homes. Cooling fall temperatures push spiders indoors seeking warmth. Low wind favors web construction.

Spiders a Problem?

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

(217) 993-8391