Farther east, we’ve got a trough digging deep into the U.S. Deep South. You’d expect to see this setup over the Great Lakes around this time of year—not all the way toward the Sunshine State. As a result, unseasonably cold air will reach the Gulf of Mexico on Monday and Tuesday.
This unusual setup will make portions of the Prairies warmer than Florida for much of Monday and Tuesday.
Monday’s high temperatures of 15°C in Calgary and 19°C in Medicine Hat contrast sharply with expected high temperatures of just 6°C in Atlanta and 4°C in Nashville.
For context, the average high this time of year in Atlanta is about 19°C and a seasonable reading hovers around 18°C up the road in Nashville.
Conditions will get even colder overnight. Tuesday morning could see frost as far south as Orlando, Florida, with below-freezing temperatures possible in the northern fringes of the state.
These temperatures are likely cold enough to slow the metabolism of even the hardiest iguana, leading to the potential for raining reptiles on Tuesday morning.
