Frost can be seen in Florida nearly every winter. It forms when temperatures fall near or below freezing.
How does snow form? - Met Office
How do insects survive cold weather?, Illinois Extension
How Trees Survive Cold Winters - Project Learning Tree
Climate Change for Kids - Melting Polar Ice Caps - Science Sparks
Simple Weather Science Experiments for Kids
Average First and Last Freeze Dates
How to Make Ice Spikes in Your Freezer
Project Weather School: How Frost Forms
What Is Snow? How Does It Form? (Plus Free Worksheet + Slides)
Observing clouds and weather — Science Learning Hub
Frost Formation in Eastern Iowa and When We Can Expect a Hard Freeze, Schnack's Weather Blog
Ice cores and climate change - British Antarctic Survey
The Texas Freeze: Timeline of events