When and where did the earliest weather forecast originate?

Folk proverbs are the earliest weather forecasts.

People all over the world observe the changes of the weather in their struggle with nature and try to find some laws. Weather proverbs are the experiences about weather changes that spread among the people in the form of idioms or songs.

As early as 3000 years ago, there were many records about meteorology in Oracle Bone Inscriptions of Yin Ruins in China. Jia Sixie of the Northern Wei Dynasty also recorded weather proverbs in Qi Yao Min Shu, such as "It's sunny, but it will be frosty at night". In Du Fu's poems in Tang Dynasty, there is "cuckoo urges spring planting", which means that after cuckoo sings, there is generally no strong cold air influence, and farmers can sow.

There are also some weather proverbs that are worldwide. For example, there is a proverb in China, "Work at sunrise and travel thousands of miles at sunset", which is also widely circulated in Japan. This proverb appears in the United States with another charm: "The sky is red in the evening and sailors are happy."

The experience of ancient people in measuring the sky is the embryonic form of today's weather forecast. Many of these experiences are still circulating among the people and are still used for weather forecasting.