When it's gray and rainy out, does that affect how you feel? This expression comes from the idea that bad weather might hurt a person's health and mood. The saying also may be related to "under the weather bow," the part of a boat that will take the force of rough seas during stormy weather. If you were in that part of the boat, you might get seasick!

Reviewed by: Mary L. Gavin, MD
Date reviewed: February 2007