Is the weather foklore rainbow at noon more rain soon true?

The saying "rainbow at noon, more rain soon" is a piece of weather folklore suggesting that a rainbow seen around midday indicates impending rain. This belief is based on the idea that rainbows are formed by sunlight refracting through raindrops, so if a rainbow appears when the sun is high, it may suggest that rain is nearby or forthcoming. However, while rainbows do indicate moisture in the atmosphere, this saying is not a reliable predictor of future weather. Actual weather patterns are influenced by many factors that folklore cannot accurately account for.