LeMone is a veteran atmospheric scientist who uses both atmospheric observations and computer models to study the formation and development of clouds, the development of precipitation, and the structure of storms. She has a particular interest in the interactions between the Earth’s surface and the lower atmosphere – for example, the often subtle ways that vegetation and soil moisture can influence local temperatures and humidity. She also studies the structure and airflow of precipitating areas in showers and thunderstorms. LeMone has been interviewed widely on clouds, and she has written a non-technical guide to clouds as well as popular articles on weather. She served as the 2010-11 president of the AMS.