- Water Table
- Wave Motions
- Weather and Climate
- Weather Balloon
- Weather Forecasting
- Weather Forecasting Methods
- Weather Radar
- Weather Satellite
- Weathering and Weathering Series
- Wegener, Alfred (1880-1930)
- Werner, Abraham Gottlob (1749-1817)
- Wilson, J. Tuzo (1908-1993)
- Wilson, Robert W. (1936- )
- Wind
- Wind Chill
- Wind Shear
- Wow! signal
- Xenolith
- Year, Length of
- Zeolite
