Floridians are being urged to look up—and down—as a powerful Arctic cold blast spreads across the state this week, bringing with it a strange but well-documented winter hazard: falling iguanas. When temperatures plunge, these cold-blooded reptiles can become immobilized in trees, lose their grip, and tumble to the ground, startling residents and visitors alike.

Forecasters say the cold snap could send overnight temperatures into the low 30s in parts of north and central Florida, with chillier air also reaching metropolitan areas not used to prolonged cold. According to outlooks from AccuWeather, freeze watches and frost advisories are expanding as Arctic air funnels into the Southeast.

Why do iguanas fall from trees?

Iguanas are ectothermic, meaning they rely on external heat to regulate body temperature. When readings dip below about 50°F (10°C), their metabolism slows dramatically. In the low 40s—and especially the 30s—their muscles can seize up, leaving them temporarily paralyzed. Many iguanas roost in trees at night; once cold-stunned, they may simply let go.

The good news is that this condition is usually temporary. As daylight returns and temperatures rise, most iguanas recover and move on. The key message from wildlife experts: they are not dead, just immobilized.

Which Florida cities are most at risk?

Jacksonville and other parts of north Florida face the highest risk when Arctic fronts arrive, with overnight freezes more common there. In Orlando and Tampa, lows in the upper 30s to low 40s can still trigger cold-stunning, especially in inland neighborhoods and shaded areas. Even Miami, typically spared hard freezes, can see falling iguanas during brief cold snaps when overnight temperatures slip toward the low 50s.

Interior and suburban areas—where radiational cooling is stronger—often see the most reports. Sidewalks, driveways, canal edges, and park paths are frequent landing spots.

What should you do if you see a fallen iguana?

Officials and veterinarians recommend a simple approach: leave it alone. A cold-stunned iguana can wake suddenly once warmed by the sun, and they have sharp claws and teeth. Keep children and pets away, give the animal space, and allow nature to take its course.

If an iguana is in immediate danger—such as lying in a busy roadway—local guidance suggests contacting animal control or wildlife professionals. General wildlife safety advice is available from the Florida Fish and Wildlife Conservation Commission.

A familiar Florida winter phenomenon

While social media often treats “iguana rain” as a novelty, it’s a recurring feature of Florida winters during strong cold outbreaks. Similar scenes were reported during late-season cold snaps in recent years, with stunned reptiles spotted across lawns and sidewalks until temperatures rebounded.

Cold weather can also make iguanas more vulnerable to predators such as raccoons, bobcats, and dogs. That’s another reason experts caution against moving them: once the sun returns, a recovered iguana can usually escape on its own.

The bottom line

As Florida braces for an Arctic chill, falling iguanas are a real—if unusual—risk. Residents in Miami, Orlando, Tampa, and Jacksonville should stay alert during the coldest mornings, watch where they walk, and resist the urge to intervene. When the warmth comes back, so will the iguanas.