Frost (temperature)

Frost or freezing occurs when the temperature of air falls below the freezing point of water (0 °C, 32 °F, 273.15 K). This is usually measured at the height of 1.2 m above the ground surface.

There is a rather subjective scale to show several degrees of frost severity:

单词	Air frost
释义	Air frost 英语百科 Frost (temperature) Frost or freezing occurs when the temperature of air falls below the freezing point of water (0 °C, 32 °F, 273.15 K). This is usually measured at the height of 1.2 m above the ground surface. There is a rather subjective scale to show several degrees of frost severity:
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Air frost

Frost (temperature)