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Why scorpions come indoors

Heat, moisture, prey, and the seasons that drive encounters

Last reviewed 2026-07-20 Sources 4 Read 4 min
A striped bark scorpion on a tile floor beside a white baseboard, its two dark back stripes and pale slender pincers clearly visible.
A striped bark scorpion indoors along a baseboard, a common spot to meet one after it has come inside.
The short version

They come inside mostly to escape heat and dryness and to find moisture, following gaps and cracks into the structure.1 Encounters peak with warm-season activity: summer heat in Texas and Missouri, and spring roaming in Arkansas.23

What pulls them inside

Heat and dryness. During hot weather scorpions may move out of baking attics and into cooler living areas, and in hot, dry spells they seek out water and a more hospitable spot.24 They generally dislike temperature extremes.4

Moisture. Although they live in dry country, they still require moisture and can be drawn to damp areas.1

Entry points. They exploit gaps: control guidance targets sealing eaves, pipes, cracks, and weep holes and weather-stripping doors and windows, which are exactly the routes they use.21 Because they climb, overhanging branches that touch the roof can offer a path up and in.2

Seasonal timing

Encounters track the warm season. In Texas and Missouri they move indoors during summer heat.21 In Arkansas they roam considerably in April, May, and early June and commonly enter houses then.3 A hot, dry summer can push noticeably more of them indoors, as happened across south and central Texas in 2018.4

Approved sources tie indoor encounters to spring roaming and summer heat. We do not claim they are found indoors at equal rates year-round, since that is not established in the sources.

Sources

  1. Houseman RM. “Scorpions” (G7364). University of Missouri Extension. extension.missouri.edu. Accessed 2026-07-20.Backs: enter living areas in summer for relief from heat and dryness; require moisture and are drawn to moist areas; entry via cracks around doors, windows, weep holes.
  2. Brown, Wizzie. “Scorpions” (E-362). Texas A&M AgriLife Extension. agrilifeextension.tamu.edu. Accessed 2026-07-20.Backs: move from hot attics into living areas during heat; seal eaves, pipes, cracks, weep holes; climbing enables elevated entry.
  3. University of Arkansas Arthropod Museum. “Scorpion (Centruroides vittatus).” arthropod.uark.edu. Accessed 2026-07-20.Backs: roam considerably in April, May, and early June and commonly enter houses then.
  4. Texas A&M AgriLife Today. “Hot, dry summer has scorpions in South, Central Texas heading indoors” (June 30, 2018). agrilifetoday.tamu.edu. Accessed 2026-07-20.Backs: dislike temperature extremes and seek water and a more hospitable environment in hot, dry weather; drought drove scorpions indoors across south and central Texas in 2018.
Every factual claim on this page is cited in the Sources above. This is a non-commercial reference.  ·  Last reviewed 2026-07-20.

The Scorpiologist is an independent, non-commercial reference. No products, no lead-gen, no fear-mongering.  ·  Every claim is cited on the page.  ·  Last reviewed 2026-07-20.