When is scorpion season in Arizona?
Short answer
Scorpion activity in Arizona typically runs from March through October, peaking in the hot months of June through August when monsoon rain and heat push scorpions to move and hunt at night. They do not die off in winter — they brumate in wall voids, block fencing, and other sheltered spots, which is why homeowners still find them indoors on warm winter days.
Arizona context
Timing shifts with elevation across Hydra's service area. Gila Valley and Sierra Vista customers usually see activity ramp up earlier and last longer than higher-elevation White Mountains properties. Monsoon storms are the reliable trigger: heavy rain floods harborage and displaced scorpions move, which is when indoor sighting calls spike.
What you can do
- Start exclusion work in late winter, before activity ramps up in spring
- Do a UV blacklight walk of the perimeter on a warm night in spring to gauge pressure early
- Re-check door sweeps and weep-hole screening before monsoon season
- Keep service running year-round rather than pausing in winter, since scorpions overwinter in the structure itself
When professional service is warranted
The most effective time to start a program is before peak season, not during it. If you had indoor sightings last summer and did nothing over the winter, the same harborage is still there.
How Hydra handles it
Hydra services scorpion accounts year-round rather than seasonally, because overwintering scorpions live in the same voids and block cavities they use in summer. Treatment intensity and inspection focus shift with the season, and recurring plans are scheduled so protection is already in place before monsoon activity begins.
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Reviewed by the Hydra Pest Control service team · Updated