Red Sky At Night... The origin of the saying is unknown, although a form of it appears in the bible (Matthew 16:2-3). It has some basis in science and is a fairly good predictor of-though no guarantee-of weather at the mid latitudes in the Northern Hemisphere, where storm systems generally follow the jet stream from west to east.
Matthew 16:2-3 “When evening comes you say, ‘It will be fair weather, because the sky is red,’ and in the morning, ‘It will be stormy today, because the sky is red and darkening.’ 2 You know how to judge correctly the appearance of the sky, 3 but you cannot evaluate the signs of the times.
Nevertheless, when I was finished buying diapers and bottled water at K Mart, I was greeted by this beautiful sky...so of course I took a picture.