The LSU Ag Center states, “Adult females of these species are medium-to-large black spiders 0.4 to 0.5 inches in body length with globular abdomens that are glossy in surface luster.” ...

Spiders in WA state explained: How to identify dangerous spiders, when a spider bite is venomous, dangerous spiders & common house spiders.

Luckily, this onset of spider sightings will only last through the end of September. The giant house spider can grow to have a body length of 1 inches with its legs growing up to 4 inches long.