A: Hello - The rug will be fine, since it is an outdoor rug, but we would recommend being careful of the surface it is placed on. If it is a wood deck, we advise to take the rug off to dry the rug/clean the deck of any discoloring from trapped water underneath the rug. The rug will be fine and should not mold. If the rug is on stone/concrete, it should be fine in the rain. Just check the surface every once in a while. Thanks for reaching out! - Tania