Only three days of fog means three rainy days.

The fog will not last more than three days. It rained for three days, which means it doesn't rain on foggy days, but it will rain on foggy days for more than three days.

This is because the old farmers found in their daily life that there are usually nine sunny days after ten heavy fogs, and three sunny days often appear after heavy fogs. If it doesn't appear, there will usually be special weather and disasters such as rain or drought. Therefore, there is an agricultural proverb, "It will rain for three days if it is foggy", which is basically derived from experience.

Proverbs about the weather:

1, there is no good goods in the northwest, and it will hail without a typhoon.

2. Dark clouds are the limelight and white clouds are the omen of rain.

3, Yun got married, and the rain is getting worse.

4. Get up early, take a walk, and sun the dog at noon.

5. I'm afraid of Nanyun and Beiyun turning over at night.

6. Look at the southeast early and the northwest late.

7. Walking in the clouds at sunset, after midnight rain.

Proverbs are concise phrases widely circulated among the people, which mostly reflect the practical experience of working people and are generally passed down from mouth to mouth. Most of them are easy-to-understand spoken short sentences or rhymes.

The origin of proverbs:

(1) Proverbs about understanding nature and summing up production experience, such as "Long worm corridor, heavy rain is coming".

(2) Understand the society and sum up the proverbs of social activities, such as "officials are not greedy for money, dogs don't eat shit" and "release tigers to the mountains, and there will be endless future troubles".

(3) Proverbs that sum up general life experience, such as "A cold starts with the feet, and illness starts with the mouth" and "Get up early, you will never get old".