1. To hold up; to bear; "The ship weathered the storm."
2. To wear away; "The rocks are weathered away by the tide waters."

Short-term changes in temperature, humidity, rainfall, and barometric pressure in the atmosphere.

It is usually in reference to local atmospheric changes or conditions.

1. The condition of the atmosphere with regard to temperature, cloudiness, rainfall, wind, and other meteorological conditions: Today the weather was stormy and wet.
2. The short-term state of the atmosphere, as distinguished from the long-term conditions of "climate"; this includes temperature, humidity, precipitation, wind, visibility, and other factors, chiefly considered in terms of their effects on organic life and human activity: Joe listened to the report about the weather before leaving home to go to work.
3. Specific localized atmospheric situations at a given time; such as, rain or snow: The different weathers in this country vary from very dry to excessively wet or flooding.
4. Etymology: from Middle English weder, wether; from Old English weder, "weather, storm, wind".

1. To change a color, etc., because of the effects of the sun, wind, rain, etc. that develops over a long period of time: The surface of the porch was weathering for a long time.
2. To deal with or to experience something dangerous or unpleasant without being damaged or harmed very much: The couple had to weather some difficult adjustments during the beginning of their marriage.

The travelers weathered some very stormy days when they were hiking in the mountains.

Weather, Nature in Motion by Anne H. Oman; National Geographic; Washington, D.C.; 2005.