"Red Sky at morning, sailors take warning.
Red sky at night, sailors delight!"
There is some truth to this weather lore. In the early morning if the rising sun paints the clouds red, there will probably be rain coming during the day because the moisture is on the way. In the evening if the sunset turns the sky red, the moisture is on the way out and the next day the weather should be nice.
This sunset photo was taken at Snowbird ski resort in Utah in Dec. 2005.