Florida Warns of ‘Iguana Fall’ as Cold-Stunning Temperatures in the 30s and Low 40s Expected to Knock Lizards From Trees Overnight
FLORIDA — South Florida residents are being urged to watch their step on New Year’s Eve and early New Year’s morning as a strong cold front brings temperatures cold enough to stun iguanas, causing them to lose their grip and fall from trees. The unusual but well-documented phenomenon is expected across the region as temperatures dip below 45°F, especially in areas highlighted in the overnight forecast map.
Cold-Stunning Conditions Expected Overnight
The forecast calls for widespread temperatures in the:
- Upper 30s across Fort Myers (around 38°F)
- Upper 30s to low 40s across southwest and southeast Florida
- Low 40s around the Treasure Coast
- Mid-40s in Miami (around 46°F)
These temperature ranges fall squarely within the threshold where iguanas become cold-stunned — a temporary condition where their bodies slow down dramatically, causing them to stiffen, lose movement, and fall from trees or elevated surfaces. While the iguanas appear frozen, they are usually not dead, but rather immobilized by the cold.
Iguanas Will “Reanimate” Once Temperatures Rise
Officials and wildlife experts say that once temperatures climb above 55°F later in the day, many cold-stunned iguanas will begin to warm up and regain movement.
Residents are warned not to approach or attempt to relocate the animals, as they may recover quickly and react defensively. Authorities also remind the public that iguanas are considered an invasive species in Florida and can be aggressive when startled.
Why the Cold Has Such a Big Impact
Iguanas, being cold-blooded reptiles, rely on ambient heat to regulate their body temperature. When temperatures fall into the low 40s and upper 30s, their muscles stop functioning properly, causing them to lose their grip on tree branches. This creates a safety risk not only for the animals, but also for pedestrians, drivers, and anyone walking under tree-lined areas early in the morning.
Cold Blast Adds to an Already Unusual Weather Pattern
The cold-stunning event comes as Florida faces an unusually potent Arctic blast sweeping across the state, bringing New Year’s wind chills into the 20s and 30s in many communities. While these brief cold snaps are not uncommon during Florida winters, this one is strong enough to trigger widespread iguana drops across the southern peninsula.
Residents Advised to Stay Alert
Authorities recommend:
- Being cautious when walking under or near trees in the early morning
- Keeping pets away from stunned iguanas
- Avoiding contact with immobile reptiles
- Staying aware that iguanas may suddenly regain movement as temperatures rise
Drivers are also urged to use caution in neighborhoods, as stunned iguanas may be found on sidewalks, driveways, and even roadways. As Florida prepares for a chilly New Year’s Eve, readers are invited to share local photos or wildlife encounters at SaludaStandard-Sentinel.com.
