The weather rock is a simple device that can be used to determine the weather. It is a rock. If the rock is wet, it is raining. If the rock is warm, it is sunny. if the rock is cold, it is frigid. If the rock is white, it is snowing. If the rock is moving, it is windy. If the rock is gone, it is a tornado.
"It has never been easier to tell what the weather outside was like. All thanks to my weather rock."