As temperatures drop, many assume mosquito season is over. However, mosquitoes don’t all die in winter—some enter dormancy, waiting for warmer weather to return.

How Mosquitoes Survive the Cold

Mosquitoes rely on warm weather to stay active. When temperatures fall below 50°F, mosquitoes stop flying and seek shelter in warm areas like basements, garages, or sewer drains. Female mosquitoes either slow their metabolism (diapause) or lay eggs that remain dormant (quiescence) until spring.

Certain species, such as Aedes mosquitoes, can lay eggs that survive for up to two years, hatching when water levels rise in warmer months.

Why Winter Mosquito Control Matters

Since mosquitoes need water to reproduce, fall and winter are the best times to remove standing water and eliminate breeding sites before they become a problem in spring. Look for and drain water in:

• Clogged gutters and drains
• Potted plant saucers
• Tarps, buckets, and tree holes
• Birdbaths and outdoor containers

Protect Yourself from Mosquitoes

Even in cooler months, mosquitoes can still be active in some areas. To stay protected:

• Wear long sleeves and pants when outdoors.
• Use EPA-approved insect repellent on exposed skin.
• Treat clothing with permethrin for added protection.

Taking action now can help reduce mosquito populations and the spread of diseases like dengue, Zika, and West Nile virus when temperatures rise again.