It's 27 degrees today, isn't it a bit abnormal? Will the weather suddenly change?

This is not normal. Specifically, there were almost several "high temperature" weather in March every year in previous years, which made people feel the breath of summer in advance; However, compared with the average temperature in the same period, it belongs to abnormal (warmer) weather; The reason is that when cold air passes by, warm air will rebound strongly and solar radiation will increase. As for cooling, yes. The average temperature in March in North China is about 6-8 degrees, in the Yangtze River basin it is about 12 degrees, and in the south of the Yangtze River it does not exceed 15 degrees, with an annual change of no more than one or two degrees. You think it's so high these days, but it will always return to the average. It can be said that the cooling (large) is certain. Recently, with the arrival of a strong cold air, the temperature in most areas will drop by more than 10 degrees. In addition, it is estimated that this cooling will occur at least once or twice. In short, remember: the truth of freezing in spring and autumn, don't take off a lot at once, and always pay attention to the weather changes.