Today’s Tick Risk in South Dakota – Real-Time Forecast & Activity Map
Check your ZIP code for local tick activity, real-time risk levels, and prevention insights.
Built from CDC and NOAA data
Surveillance Insights
- Annual Lyme Cases
- Rare Lyme; Tularemia is a concern
- Based on CDC surveillance data
- Long-Term Trend
- Stable tick populations in riparian zones
- Based on CDC surveillance data
- High Risk Zones
- Custer, Pennington, Lawrence, Minnehaha, Spearfish Canyon, Newton Hills State Park, Custer State Park
Current Situation in South Dakota
South Dakota presents a unique tick landscape. The tick forecast for South Dakota is generally low in the open plains but "High" in specific islands of habitat. The Black Hills in the west are a distinct ecosystem with their own tick risks, including the Rocky Mountain Wood Tick. In the east, the Big Sioux and James River valleys support American Dog tick populations. Lyme disease is rare but reported, often associated with travel or the very eastern edge of the state. Tourists visiting for the Sturgis Rally or Mt. Rushmore should be aware of tick risks in campgrounds.
Snapshot of the current tick situation in South Dakota, based on regional surveillance data and seasonal activity patterns.
- Risk Level
- Moderate to High
- Peak Activity
- May - July
- Dominant Vector
- American Dog Tick (East) & Rocky Mountain Wood Tick (West)
Where Ticks Hide in South Dakota
The Black Hills National Forest is the primary tick hotspot in the west, offering a ponderosa pine habitat that supports wood ticks. In the east, the wooded river bottoms and shelterbelts are where ticks are found. Custer State Park and the Spearfish Canyon area are popular tourist destinations where tick encounters occur. The open prairie is generally low-risk, but tall grass near water sources can harbor ticks.
Seasonal Activity Pattern
The season is short, from May through August. The Rocky Mountain Wood Tick is most active in the spring (May-June). American Dog ticks peak in early summer. Ticks are generally dormant from October through April due to the harsh winters. Spring turkey hunters and early summer campers face the highest risks.
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Local Vector Analysis
Understanding which ticks are active in South Dakota helps you identify threats and take appropriate precautions.
American Dog Tick
Dermacentor variabilis
Appearance: Brown with white/grey mottling. Ornate white patterns on shield.
Peak Season: Spring and Summer
Habitat: Grassy fields, walkways, and trails. More tolerant of dry conditions than Deer Ticks.
Diseases: Rocky Mountain Spotted Fever, Tularemia
Lyme Disease
Vector: Deer tick (Ixodes scapularis)
Lyme Disease
Lyme disease is a bacterial infection transmitted by deer ticks. If caught early, it's highly treatable with antibiotics. Left untreated, it can cause serious complications affecting joints, heart, and nervous system.
Early Warning Signs
- Erythema migrans (EM) rash - appears in 70-80% of cases
- Bullseye rash (circular red rash with clear center)
- Rash appears 3-30 days after bite
- Fever and chills
Progression & Symptoms
- Severe headaches and neck stiffness
- Facial palsy (loss of muscle tone on one or both sides of face)
- Arthritis with severe joint pain, especially knees
Prevention Strategies
The best way to avoid tick-borne diseases is to prevent tick bites in the first place. These strategies work together to create multiple layers of protection.
Permethrin-Treated Clothing
Permethrin is an insecticide that kills ticks on contact. When applied to clothing, it remains effective through multiple washes.
Daily Tick Checks
Since disease transmission typically requires 24-48 hours of attachment, finding and removing ticks quickly dramatically reduces infection risk.
Landscaping Defense
Creating a tick-hostile environment in your yard reduces the chance ticks will be waiting when you step outside.
Shower Within 2 Hours
Showering after outdoor activity gives you a chance to wash off ticks before they bite.
Tick Bite Protocol
Acting quickly and correctly is your best defense against infection.Follow these 6 critical steps.
Don't Panic
Most tick bites do not transmit disease, especially if removed quickly.
- Infection rates vary by region (20-50%)
- Transmission usually takes 24-48 hours
- Stay calm and use proper technique
Gather Tools
Use fine-tipped tweezers. Avoid fingers or chemicals.
- Fine-tipped tweezers are best
- Rubbing alcohol for cleaning
- Small container to save the tick
Grasp & Pull
Grasp close to skin and pull upward with steady pressure.
- Grab mouthparts near skin (not body)
- Pull straight up—don't twist
- Maintain steady, even pressure
Clean Area
Disinfect the bite site and your hands thoroughly.
- Wash with soap and water
- Apply rubbing alcohol
- Wash hands well
Save Tick
Keep the tick in a sealed container for potential testing.
- Seal in bag or container
- Label with date and location
- Bring to doctor if symptoms appear
Monitor (30 Days)
Watch for rash or flu-like symptoms for a month.
- Check for expanding rash daily
- Watch for fever or fatigue
- Seek care if you feel unwell
When does tick season end in South Dakota?
Tick activity winds down after the first hard freeze, which in South Dakota typically arrives around Sep 30. See the local first-frost window and city-by-city freeze dates.
South Dakota first frost datesAlso worried about mosquitoes in South Dakota?
West Nile virus, EEE, and the local mosquito season vary by state. Check your South Dakota mosquito risk profile.
View South Dakota mosquito forecastStay Safe in South Dakota
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