How to judge whether it will rain?

1, swallows fly low, which is a precursor to rain.

2. Sparrows can't fly far, but keep flying, sometimes flying high, sometimes flying fast, and it will rain in 30 minutes to 1 hour.

Cattle and sheep grazing in the wild don't go home when it is late. They have been eating with their heads down, and it will rain the next day.

Frog is a small animal that sings with vocal cords. It makes sound by closing two bubbles on both sides of the brain. If it is sunny, because the temperature is moderate and the air pressure is normal, the frog's cry is melodious and rhythmic; If the temperature rises when the heavy rain comes, and the temperature rises, which makes it difficult for the frog's vocal cords to make sounds, the frog will make irregular calls.

Related content explanation:

In the countryside, there was no TV in the village in the past, and farmers had no idea what the weather would be like tomorrow. Through long-term life experience, clever farmers have summed up a series of weather change rules according to the changes of nature or the reactions of small animals. These experiences are the crystallization of predecessors' wisdom.

Dragonflies are also one of the little experts in forecasting the weather. According to Bian Xiao's observation, there are always many dragonflies flying low before it rains. There is a saying in the countryside that dragonflies fly low and take raincoats when going out.