What is hoarfrost?
When does the Piedmont Triad usually get its final frost and freeze? Gardeners, beware!
Weather Wonders: How does frost form?, Top Stories
How does frost form?
How does frost form?
What causes different frost patterns? - BBC Weather
Final frost in Maine: Portland vs. Bangor vs. Aroostook County
Frost without a freeze: How it works
NWS Science Corner: How does Frost Form with Low Temps Warmer than 32F?