How many degrees is first frost?

The temperature in first frost is 1℃-2℃, and the highest temperature cities are Sanya, Beihai and Fuzhou, with an average temperature of around 25℃. The cities with the lowest temperature are Harbin, Changchun, Yinchuan and Hohhot, with an average temperature of around 1℃. In the south of latitude, the average temperature is around 16℃.

of course, even at the same latitude, the temperature and humidity of the air close to the ground layer are different due to different altitude and topography. In first frost season, the cool autumn wind has blown to Guangzhou, the flower city. The average temperature in the northeast, eastern Inner Mongolia and most of the northwest has been below ℃.

Introduction:

As one of the 24 solar terms in first frost, the weather is getting colder and frosty. First frost is generally the first frost of the twenty-four solar terms on October 23rd of the Gregorian calendar, when the sun reaches 21 degrees of the Huangjing. First frost is the last solar term in autumn and a transitional solar term from autumn to winter. There is a lot of heat dissipation on the ground in autumn, and the temperature suddenly drops below degrees. The water vapor in the air condenses directly on the ground or plants to form fine ice needles, and some become hexagonal frost flowers, which are white and loose in structure.