Black Widow Spiders’ Activity During Cold Weather

Although they exist throughout the western hemisphere, black widow spiders are most common in warm, southern states. These areas are more suitable for their life cycles and activities. Black widows prefer dry and dark locations and will seek warm dwellings in winter. Inside, black widows typically hide in sheltered, dimly lit locations such as garages, dark corners, basements, closets and cluttered areas.

Black widows spin webs and breed during the summer. Female black widow spiders can produce multiple egg sacs each containing many eggs. When the eggs hatch, large spider populations emerge. The spiderlings find a hiding place to survive the winter. When warm weather returns, they finish developing into adults.