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  2. Freezing air temperature - Wikipedia

    en.wikipedia.org/wiki/Freezing_air_temperature

    Freezing [1] or frost occurs when the air temperature falls below the freezing point of water (0 °C, 32 °F, 273 K). This is usually measured at the height of 1.2 metres above the ground surface. This is usually measured at the height of 1.2 metres above the ground surface.

  3. Freezing level - Wikipedia

    en.wikipedia.org/wiki/Freezing_level

    The 0 °C isotherm under normal conditions. The freezing level, or 0 °C (zero-degree) isotherm, represents the altitude in which the temperature is at 0 °C (the freezing point of water) in a free atmosphere (i.e. allowing reflection of the sun by snow, icing conditions, etc.).

  4. Atmospheric temperature - Wikipedia

    en.wikipedia.org/wiki/Atmospheric_temperature

    The temperature of the air near the surface of the Earth is measured at meteorological observatories and weather stations, usually using thermometers placed in a shelter such as a Stevenson screen—a standardized, well-ventilated, white-painted instrument shelter. The thermometers should be positioned 1.25–2 m above the ground.

  5. Freeze warnings issued for millions with the coldest ...

    www.aol.com/news/coldest-air-months-way-millions...

    The high temperature in Washington, DC, on Wednesday could top out in the mid-50s — 10 to 15 degrees lower than normal for mid-October. Atlanta could struggle to break into the low 60s on ...

  6. Degree of frost - Wikipedia

    en.wikipedia.org/wiki/Degree_of_frost

    A degree of frost is a non-standard unit of measure for air temperature meaning degrees below melting point (also known as "freezing point") of water (0 degrees Celsius or 32 degrees Fahrenheit). "Degree" in this case can refer to degree Celsius or degree Fahrenheit.

  7. Kelvin - Wikipedia

    en.wikipedia.org/wiki/Kelvin

    The difference of temperatures between the freezing- and boiling-points of water under standard atmospheric pressure shall be called 100 degrees. (The same increment as the Celsius scale) Thomson's best estimates at the time were that the temperature of freezing water was 273.7 K and the temperature of boiling water was 373.7 K. [33]

  8. Frigid air with highs below freezing to shock central ... - AOL

    www.aol.com/article/2016/01/02/frigid-air-with...

    Much colder weather is in store across the central and eastern U.S. during January 2016, following months of warmth with record-challenging temperatures. Frigid air with highs below freezing to ...

  9. Temperature - Wikipedia

    en.wikipedia.org/wiki/Temperature

    air temperature affects all ... 0 °C being defined as the freezing point of ... version of such a law views empirical temperature as a chart on a hotness manifold. ...