The climate description presented here summarizes some of the Bowen analyses and discusses some recent observations of wind patterns in Los Alamos canyon and evapotranspiration. Normal values are based on observations taken at the official Los Alamos meteorological-observing station from 1961 to 1990. When extremes are given, the entire record is used. In general terms, Los Alamos has a temperate mountain climate with four distinct seasons.
Spring tends to be windy and dry.
Summer begins with warm, often dry, conditions in June, followed by a 2-month rainy season. In the autumn there is a return to drier, cooler, and calmer weather. And in winter, mid-latitude storms drop far enough south to keep the ground covered with snow for about two months. Details of the climate are presented below. Atmospheric State .