Pest Forecast for Jefferson County, Wisconsin

Jefferson County, Wisconsin · Pop. 85,375

57
/100
MODERATE OVERALL RISK

Jefferson County is currently experiencing moderate overall pest risk. Most active: Ticks (85), Termites (70), Spiders (65). Warm temperatures are supporting pest activity.

Last updated: June 5, 2026 · Source: Open-Meteo Professional Weather Data

Current Weather Conditions

74.4°F
Temperature
Feels like 79.5°F
87%
Humidity
Dewpoint 70.3°F
0"
Rain (24h)
7-day: 0.02"
8.4 mph
Wind
Gusts 17.9 mph
68°F
Soil Temperature
Active pest zone
36%
Soil Moisture
Saturated
0"
Rain (3-day)
0.02"
Rain (7-day)

Source: Open-Meteo weather models for Jefferson County area · Updated Jun 5, 7:02 PM

30-Day Weather Summary

70.1°F
Avg High
↑ vs avg
0.99"
Total Rainfall
10 rainy days

7-Day Weather Forecast

Today
Jun 5
75°
63°
97%
0.965" rain
Sat
Jun 6
82°
65°
16%
0.064" rain
Sun
Jun 7
75°
61°
8%
Mon
Jun 8
71°
62°
82%
0.165" rain
Tue
Jun 9
81°
66°
59%
0.083" rain
Wed
Jun 10
88°
69°
18%
1.343" rain
18
Thu
Jun 11
89°
74°
22%
17

All Pest Risk Scores for Jefferson County

Ticks
Steady
85
/100
SEVERE

Temps of 74.4°F are in the tick questing range.

View Full Forecast →
Termites
Steady
70
/100
HIGH

Warm (74.4°F) and humid (87%) soil supports termite activity.

View Full Forecast →
Spiders
Steady
65
/100
HIGH

Humidity at 87% attracts insects, drawing spiders.

View Full Forecast →
Mosquitoes
Steady
63
/100
HIGH

Warm temps (74.4°F) support mosquito activity.

View Full Forecast →
Ants
Steady
60
/100
HIGH

Warm conditions (74.4°F) keep ant foraging active.

View Full Forecast →
Wasps
Steady
50
/100
MODERATE

Warm temps (74.4°F) fuel peak wasp foraging.

View Full Forecast →
Mice & Rats
Steady
5
/100
LOW

Mild temps (74.4°F) reduce indoor rodent pressure.

View Full Forecast →

3-Day Pest Outlook for Jefferson County

Pest TodaySatSun
Ticks
85 🔴90 🔴 +590 🔴 +5
Termites
70 🟠75 🟠 +575 🟠 +5
Spiders
65 🟠68 🟠 +368 🟠 +3
Mosquitoes
63 🟠71 🟠 +871 🟠 +8
Ants
60 🟠65 🟠 +560 🟠
Wasps
50 🟡55 🟡 +550 🟡
Mice & Rats
5 🟢0 🟢 -50 🟢 -5

Projected from Open-Meteo forecast data. Actual scores update every 3 hours.

Need Pest Control in Jefferson County?

Ticks risk is SEVERE (85/100)

Professional treatment is recommended when scores are this high.

9 homeowners in Jefferson County have requested inspections

Pest Seasonality in Jefferson County

Month Active Pests
Jan Mice/Rats (indoor), Spiders (indoor)
Feb Mice/Rats (indoor)
Mar Ants (early), Termites (swarm season starts)
Apr Ticks (season starts), Ants, Termites
May Ticks (peak nymphs), Mosquitoes (start), Ants
Jun ← Now Ticks (peak), Mosquitoes (surge), Wasps (nest building)
Jul Mosquitoes (peak), Ticks, Wasps
Aug Mosquitoes (peak), Wasps (peak), Spiders (increase)
Sep Wasps (aggressive), Spiders, Mice (seeking warmth)
Oct Mice/Rats (peak intrusion), Spiders (indoor)
Nov Mice/Rats (indoor)
Dec Mice/Rats (indoor)

Nearby Cities

Fort Atkinson
59/100 🟡
Watertown
57/100 🟡
Oconomowoc
58/100 🟡
Delafield
58/100 🟡
Janesville
51/100 🟡
Cottage Grove
34/100 🟡
Hartland
58/100 🟡
Stoughton
57/100 🟡

Pest FAQ for Jefferson County

What pests are active in Jefferson County right now?
Currently active pests in Jefferson County: Ticks (severe risk, score 85/100), Termites (high risk, score 70/100), Spiders (high risk, score 65/100), Mosquitoes (high risk, score 63/100), Ants (high risk, score 60/100), Wasps (moderate risk, score 50/100). Scores are updated every 3 hours from real-time weather data.
Early spring (March-April) is the most effective time for preventive treatment in Jefferson County. This is when pest populations are lowest and treatments can prevent infestations before they start. For mosquitoes and ticks, treatments in May before peak season are especially cost-effective.
Average pest control costs in Jefferson County range from $150-$300 for a one-time treatment and $40-$70/month for ongoing quarterly service. Termite treatments are higher, typically $1,500-$5,000. Mosquito yard treatments run $75-$100 per application. Get free quotes from local pros through our platform.
Jefferson County sees all 7 tracked pest types seasonally: ticks (Apr-Oct), mosquitoes (May-Sep), ants (spring-summer, especially after rain), wasps (Jun-Sep), spiders (year-round, peak indoors in fall), mice/rats (peak Oct-Mar), and termites (swarm season Mar-Jun). Use our forecasts to see what's active right now.
Most Wisconsin homeowners benefit from quarterly pest control service. During peak season (May-September), monthly treatments may be recommended for mosquitoes and ticks. Year-round quarterly service provides the best value for comprehensive protection against seasonal pests.

Jefferson County Pest Forecast by Type

Ticks
85/100 · severe
Mosquitoes
63/100 · high
Ants
60/100 · high
Wasps
50/100 · moderate
Spiders
65/100 · high
Mice & Rats
5/100 · low
Termites
70/100 · high

Pest Control Articles for Jefferson County

8 min read

Wisconsin Pest Forecast: What to Expect Spring 2026

Which pests are becoming active across Wisconsin this spring, current risk scores for major cities, weather conditions to watch, and prevention tips for every pest type.

 10 min read

When Is Tick Season in Wisconsin? A Data-Driven Guide

Tick season timing in Wisconsin, how temperature and humidity drive tick activity, current tick scores for top cities, and evidence-based prevention strategies.

 12 min read

How Weather Affects Pest Activity: The Science Behind Our Forecasts

The scientific relationship between weather conditions and pest behavior for all 7 tracked pest types, including temperature thresholds, humidity effects, rainfall impact, and degree-day models.

Browse all pest control articles →

← All Wisconsin Forecasts 📚 Pest Control Blog 🏢 Are you a pest control professional? Join our network →