Pest Forecast for Jefferson County, Wisconsin

Jefferson County, Wisconsin · Pop. 85,375

53
/100
MODERATE OVERALL RISK

Jefferson County is currently experiencing moderate overall pest risk. Most active: Mosquitoes (70), Wasps (68), Termites (65). Warm temperatures are supporting pest activity.

Last updated: August 4, 2026 · Source: Open-Meteo Professional Weather Data

Current Weather Conditions

77.6°F
Temperature
Feels like 78.2°F
50%
Humidity
Dewpoint 57.5°F
0"
Rain (24h)
7-day: 2.04"
4.4 mph
Wind
Gusts 6.7 mph
74.1°F
Soil Temperature
Active pest zone
28%
Soil Moisture
Moist
1.55"
Rain (3-day)
2.04"
Rain (7-day)

Source: Open-Meteo weather models for Jefferson County area · Updated Aug 4, 12:02 AM

30-Day Weather Summary

82°F
Avg High
↓ vs avg
3.21"
Total Rainfall
8 rainy days

7-Day Weather Forecast

Today
Aug 4
84°
64°
34%
Wed
Aug 5
77°
64°
75%
0.051" rain
Thu
Aug 6
78°
63°
45%
0.039" rain
Fri
Aug 7
83°
65°
2%
0.039" rain
Sat
Aug 8
82°
64°
19%
Sun
Aug 9
84°
70°
19%
0.004" rain

All Pest Risk Scores for Jefferson County

Mosquitoes
Steady
70
/100
HIGH

Warm temps (77.6°F) support mosquito activity.

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Wasps
Steady
68
/100
HIGH

Warm temps (77.6°F) fuel peak wasp foraging.

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Termites
Steady
65
/100
HIGH

Current conditions are limiting termite surface activity.

View Full Forecast →
Ants
Steady
55
/100
MODERATE

Warm conditions (77.6°F) keep ant foraging active.

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Spiders
Steady
55
/100
MODERATE

Moderate conditions are keeping spider activity normal.

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Ticks
Steady
50
/100
MODERATE

Temps of 77.6°F are in the tick questing range.

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Mice & Rats
Steady
10
/100
LOW

Mild temps (77.6°F) reduce indoor rodent pressure.

View Full Forecast →

3-Day Pest Outlook for Jefferson County

Pest TodayWedThu
Mosquitoes
70 🟠78 🟠 +878 🟠 +8
Wasps
68 🟠73 🟠 +573 🟠 +5
Termites
65 🟠70 🟠 +570 🟠 +5
Ants
55 🟡60 🟠 +560 🟠 +5
Spiders
55 🟡58 🟡 +358 🟡 +3
Ticks
50 🟡55 🟡 +555 🟡 +5
Mice & Rats
10 🟢2 🟢 -82 🟢 -8

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

Need Pest Control in Jefferson County?

Mosquitoes risk is HIGH (70/100)

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 Ticks (peak), Mosquitoes (surge), Wasps (nest building)
Jul Mosquitoes (peak), Ticks, Wasps
Aug ← Now 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
53/100 🟡
Watertown
58/100 🟡
Oconomowoc
56/100 🟡
Delafield
59/100 🟡
Janesville
58/100 🟡
Cottage Grove
54/100 🟡
Hartland
60/100 🟠
Stoughton
52/100 🟡

Pest FAQ for Jefferson County

What pests are active in Jefferson County right now?
Currently active pests in Jefferson County: Mosquitoes (high risk, score 70/100), Wasps (high risk, score 68/100), Termites (high risk, score 65/100), Ants (moderate risk, score 55/100), Spiders (moderate risk, score 55/100), Ticks (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
50/100 · moderate
Mosquitoes
70/100 · high
Ants
55/100 · moderate
Wasps
68/100 · high
Spiders
55/100 · moderate
Mice & Rats
10/100 · low
Termites
65/100 · 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 →

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