What one considers "too cold" depends on what one is used to. My husband told me stories of climbing out of the window on the 2nd floor of the house he lived in onto the snow (MI). I grew up thinking ice came in a glass along with tea and snow was on TV (S FL). Needless to say what he thought was "too cold" was vastly different than what I thought was "too cold". And what I thought was "too hot" was very different than what he thought was "too hot".
South of I-40 and lower elevations will generally keep you in temps above freezing during the day. There will be overnight freezes. The closer to I-40 and/or the higher your elevation will, generally, means colder temps. This is just a generalization. This does not mean you will never get freezing temps. The only time my black tank valve froze, I was living 100 miles north of the FL/GA state line (300ft elevation). It was a rare 3 day freeze (even daytime temps did not go above freezing). I spent the following winter in TN, north of I-40 (1600ft elevation) and while it snowed several times, the tank valves never froze because I insulated/heat taped them. I currently am 150 miles south of I-40 at 3500ft elevation (deserts do not always mean a milder winter!). I usually have winter nights at or well below 35F. Days range from well below freezing to 70F. Single digits are fairly common for both day and night. Even moving around, you will not escape cold temps all the time. Find a weather app for your cellphone and pay attention to the weather forecasts. They generally have forecasts 10 days out. They aren't always terribly accurate but they are close enough.
In the winter, the warmer areas get booked up early and cost a lot. In the summer, higher altitudes are cooler and are also in much demand.
I remember it snowing in Ft. Pierce, FL in the early 70's. My grandmother's pond near Ocala would often freeze over in the winter. It would usually be thick enough that the geese and hunting dogs would walk all over it. Occasionally it was thick enough my cousin could walk on it. And of course we laughed at him when it wasn't. Historically, Florida has had hard freezes all the way down to the Keys.
BTW, I have been finding that State Parks & National Parks are costing $40 and up per night for W/E sites. If you look around, rather than becoming obsessed with a specific location, you can find city/county parks and private parks that are below $40 for W/E/S sites. For the private parks, you may need to learn to not be terrified of "permanent RVers" in "older RVs".
South of I-40 and lower elevations will generally keep you in temps above freezing during the day. There will be overnight freezes. The closer to I-40 and/or the higher your elevation will, generally, means colder temps. This is just a generalization. This does not mean you will never get freezing temps. The only time my black tank valve froze, I was living 100 miles north of the FL/GA state line (300ft elevation). It was a rare 3 day freeze (even daytime temps did not go above freezing). I spent the following winter in TN, north of I-40 (1600ft elevation) and while it snowed several times, the tank valves never froze because I insulated/heat taped them. I currently am 150 miles south of I-40 at 3500ft elevation (deserts do not always mean a milder winter!). I usually have winter nights at or well below 35F. Days range from well below freezing to 70F. Single digits are fairly common for both day and night. Even moving around, you will not escape cold temps all the time. Find a weather app for your cellphone and pay attention to the weather forecasts. They generally have forecasts 10 days out. They aren't always terribly accurate but they are close enough.
In the winter, the warmer areas get booked up early and cost a lot. In the summer, higher altitudes are cooler and are also in much demand.
I remember it snowing in Ft. Pierce, FL in the early 70's. My grandmother's pond near Ocala would often freeze over in the winter. It would usually be thick enough that the geese and hunting dogs would walk all over it. Occasionally it was thick enough my cousin could walk on it. And of course we laughed at him when it wasn't. Historically, Florida has had hard freezes all the way down to the Keys.
BTW, I have been finding that State Parks & National Parks are costing $40 and up per night for W/E sites. If you look around, rather than becoming obsessed with a specific location, you can find city/county parks and private parks that are below $40 for W/E/S sites. For the private parks, you may need to learn to not be terrified of "permanent RVers" in "older RVs".