By: LaJaunie's Pest Control 
October 9, 2025 
Louisiana’s humid climate keeps mosquitoes active longer than most people expect. Even in the fall, homeowners in Baton Rouge and New Orleans still swat mosquitoes. Warm temperatures and high humidity contribute to high mosquito activity.
Cooler nights do not drive mosquitoes away. Louisiana’s mild fall keeps them active through October. Mosquito activity drops only after several nights of steady, cold weather.
Knowing what fuels mosquito season in Louisiana helps you protect your family and yard from itchy bites and potential mosquito-borne illnesses.
Key Takeaways
• Mosquitoes in Louisiana stay active through October due to warm, humid weather.
• Standing water in gutters, bird baths, and low spots drives most breeding.
• Mosquitoes in Baton Rouge and New Orleans can carry West Nile virus.
• LaJaunie’s Pest Control offers year-round mosquito protection.
Why Mosquitoes Stay Active in October
Mosquitoes in Louisiana thrive in warm, moist weather. When October temperatures stay around the 70s and low 80s, mosquitoes remain active. Brief rain can fill low spots and gutters, creating quick breeding sites.
The southern house mosquito (Culex quinquefasciatus) is one of the most common species of mosquitoes found in Baton Rouge and New Orleans during the fall. These adult mosquitoes may carry West Nile virus and remain active until nighttime temperatures fall below about 50°F for several days. Once the cold sets in, where mosquitoes go in Louisiana during the winter depends on how cold and dry the season becomes.
Because Louisiana stays warm and humid longer than many states, mosquito season lasts longer. If you’ve wondered if mosquitoes slow down in the fall in Louisiana, the answer depends on nighttime temperatures and humidity.
The Life Cycle of Fall Mosquitoes
The mosquito life cycle, with its egg, larval, pupal, and adult stages, depends on the presence of standing water. In October, female mosquitoes lay mosquito eggs in puddles, clogged gutters, and neglected bird baths. Small containers, such as flower pots, can hold dozens of larvae.
Warmer weather speeds the life cycle. The LSU AgCenter states that adults can develop from eggs in about a week under ideal conditions. A few days of rain followed by humid afternoons can trigger a quick spike in mosquito populations around your home.
Common Breeding Grounds in Louisiana Yards
Mosquito breeding does not stop in the fall. In Baton Rouge, clogged gutters and overwatered lawns collect water that draws female mosquitoes. In New Orleans, bayou-side areas often hold stagnant water sources where mosquitoes breed.
Do a weekly check. Empty bird baths, clean gutters, and turn over buckets or planters that collect rain. Removing these small sites slows the growth of late-season mosquitoes, and there are many simple ways to prevent mosquito breeding in Louisiana that work year-round.
Health Concerns During Late Mosquito Season
Even in October, Louisiana mosquitoes can spread West Nile virus, Zika virus, and other illnesses. Culex mosquitoes stay active in the fall and breed in polluted water like ditches and storm drains. Most bites do not cause illness, but one infected mosquito can spread disease.
Baton Rouge and New Orleans health teams will continue to monitor mosquitoes through October, following CDC guidance. Wear long sleeves and use an EPA-approved repellent with DEET, picaridin, or oil of lemon eucalyptus. Some homeowners also try natural mosquito repellents for added protection during mild evenings.
Reducing Mosquito Activity Around Your Home
Simple steps can cut mosquito activity. Keep the grass short, repair window screens, and ensure gutters drain well. At dusk and dawn, wear long sleeves and pants when outdoors.
Mosquito control experts often recommend monthly fall treatments to control adult mosquitoes and prevent breeding before winter. If you notice they keep coming back, learning the reasons why you still have mosquitoes after spraying can help you identify hidden problem spots.
At LaJaunie’s Pest Control, we use professional-grade methods that keep families and pets safe. We remove breeding sites and apply targeted treatments to high-risk areas around your home.
Professional Mosquito Control in Baton Rouge and New Orleans
Home remedies and insect repellents offer temporary relief, but professional mosquito control services in Louisiana provide long-term results.
Homeowners often ask about the cost of mosquito control in Southern Louisiana, which can vary based on yard size, frequency, and service type. Our team utilizes advanced systems, such as In2Care traps, that prevent mosquitoes from laying eggs and reduce adult populations over time.
Whether you live near a bayou, in a shaded neighborhood, or in a city backyard, our mosquito control plans protect against lingering fall mosquitoes. We serve Baton Rouge, New Orleans, Thibodaux, and surrounding areas with same-day and Saturday service options for your convenience.
Making the Right Mosquito Control Choice for Louisiana Homes
October in Louisiana can still bring buzzing evenings, especially after rain. By this point in the year, most homeowners want lasting relief, not just sprays or candles. The best results are achieved through consistent prevention and professional treatment tailored to local weather conditions.
At LaJaunie’s Pest Control, we offer targeted mosquito services designed for Louisiana’s extended warm season. Our team focuses on long-term control, reducing bites well before next summer arrives.
Ready to enjoy a mosquito-free yard this fall? Contact us today to schedule your mosquito service.
FAQs
Do mosquitoes go away entirely in Louisiana during the fall?
No. Mosquitoes in Louisiana can remain active until temperatures consistently drop below 50 degrees. Mild fall weather allows them to survive well into October.
How can I prevent mosquitoes from breeding near my home?
Remove standing water from bird baths, buckets, and clogged gutters. Keep grass trimmed and check for any low spots where rain collects.
What is the best mosquito repellent to use in October?
Look for an EPA-approved mosquito repellent with DEET, picaridin, or oil of lemon eucalyptus. These ingredients provide reliable protection from mosquito bites.
