1. If you can see the distant mountain clearly, it will be sunny; If it can not be seen clearly, the rain may comes. That?s because only if it is sunny, then the air will be dry and you can see the moutain in the distance clearly.
2. If you can hear the sound of distant train, it will rain. Because it is much easier for the sound to transmit when it is cloudy. Cloudy day?s  temperature difference between day and night is small, then it will bring rains.
3. If cats are washing their faces, it might be rainy soon. They wash their faces with forefoot because the fleas are moving restlessly on their bodies due to the high humidity.
4. If frogs are croaking for a long time with no pause, it is going to rain. They have thin skins so they can sense the change of humidity. 
5. If the spider web is wet and has water drops on it, it gonna be a sunny day. The water drop will only shows when the weather is good. Because water drops can not come into being if the temperature difference is small. There will be big temperature difference in sunny day, so the vapour can become water drops when it meet cold air.
6. If fishes are jumping out of the water, it will be rainy. The bad weather can send the message quickly into the water, then the fishes are frightened to jump out of the water.
7. If swallows fly near the ground, it gonna rain. Because the insects which are swallows? main food can not fly high due to the vapour on their wings. 
8. If there is thunder and northwest monsoon near the shore in the winter, it  will rain.
9. If earthworms come out of the earth, it will rain. Bad weather will raise the humidity, and they will feel quite uncomfortable in the earth.
10. If the frost appears brilliant colour when shined by the the rising sun, it will be sunny. Frost emerges because of the big temperature difference.

professional bicycle parts manufacturer--witsport