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A drier winter may lead to fewer scorpions in metro Phoenix

Scorpions glow under a black light
U.S. Fish and
Scorpions glow when exposed to a black light.

The dry winter in Arizona has pest control professionals anticipating fewer scorpions or snakes, even if they emerge sooner with the warmer than average temperatures.

Scorpions are active in starting around 90 degrees, but tend to thrive in years with wet winters.

“So the peak season is actually monsoon, so July through October, but for some reason October is the busiest month all year,” said Christopher O’Brien, owner of Scorpion Specialists pest control. “I think it's because it cools off at night and they want to come inside.”

He said the lack of precipitation will probably result in less calls this year.

“I let customers know not to put new rock in, landscaping, pool, any of that. You are inviting them in,” O’Brien said.

Scorpions are found most where the ground is being disrupted, such as construction sites or new landscaping. Scorpions are creatures of habit, according to O’Brien.

“If they have had them in the past, they are going to come right back this summer,” O’Brien said. “If I were them, I would be proactive instead of wait until they are here again.”

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Ginia McFarland joined KJZZ as an intern in 2025. She is currently a student studying at Arizona State University's Walter Cronkite School of Journalism and Mass Communication.