i dont know it was a question in 2nd per science an no one answerd an now i wana know!!!!

oops

There is a delightful book by Humphreys entitled Weather Proverbs and Paradoxes. In it, he discusses the meteorological justifications of some proverbs associated with rainbows, such as "Rainbow at night, shepherd's delight;Rainbow in morning, shepherds take warning,"If there be a rainbow in the eve,It will rain and leave; But if there be a rainbow in the morrow It will neither lend nor borrow", and Rainbow to windward, foul fall the day; Rainbow to leeward, damp runs away." Short: Take warning - Rains coming.

Actually, it sounds peculiarly like a well-known piece of weather lore which has 2 versions that I know of - 'red sky at night sailor's (or shepherd's) delight, red sky at morning sailor's (or shepherd's) warning.' As quoted from Wikipedia: Weather systems typically move from west to east, and red clouds result when the sun shines on their undersides at either sunrise or sunset. At these two times of day, the sun's light is passing at a very low angle through a great thickness of atmosphere, the result of which is the scattering out of most of the shorter wavelengths -- the greens, blues, and violets -- of the visible spectrum, and so sunlight is heavy at the red end of the spectrum. If the morning skies are red, it is likely that clear skies to the east permit the sun to light the undersides of moisture-bearing clouds coming in from the west. Conversely, in order to see red clouds in the evening, sunlight must have a clear path from the west in order to illuminate moisture-bearing clouds moving off to the east. There are many variations on this piece of lore, but they all carry the same message. In other words, red sky (that is, red colored clouds in the sky)in the morning means that a storm is probably coming in from the west, so take warning. I don't know any version of this piece of weather lore that involves rainbows.