If a pot boils dry, rain is coming. When animals take on a heavy coat, there will be a severe winter. When you see snow, you will always hear the wind blow. When you see the sun, you know it's time for fun. When to the north wind won't blow, we shall have snow.
Black skies foretell bad weather.
When the wind started to blow, it was called the banshee. This meant a storm was coming. Visions of a lost ship meant bad weather. Fishermen used to say if you found small rocks in a codfish's stomach, there was bad weather. April showers bring May flowers.