When is the first frost?

The first frost time is Gregorian calendar 10 year1October 23rd and 24th. The first frost solar term means that the weather is getting colder and the first frost appears. It is the last solar term in autumn, which also means that winter is about to begin. At this time, the first frost generally appears in the Yellow River basin, and most areas are busy planting crops such as three wheat. Health care is particularly important in the first frost season. There is a folk proverb that "it is better to make up the first frost once a year", which shows the influence of this solar term on people.

In ancient China, the first frost was divided into three stages: first, the jackal sacrificed animals; Second, the vegetation is yellow; Third-class stinging insects are salty. In this solar term, jackals will show their prey before eating them.

Climate change during the first frost.

The solar term of the first frost means that the weather is getting colder and first frost begins. To the south of latitude, the average temperature is around 16℃, and there are three solar terms before the first frost day. In the southern valley of South China, frost can only be seen in the dead of winter. Of course, even at the same latitude, the temperature and humidity of the air close to the stratum are different due to the difference of altitude and topography, and the first frost period and frost day are also different.