Castillian-Manchegan territory and 36.6 percent of total of the Júcar watershed. It includes the eastern parts of the provinces of Cuenca and Albacete, including their respective capitals. Finally, the 34 municipalities of southeastern Albacete fall in the Segura watershed, with an extent of . Climate Castilla–La Mancha has a continentalized Mediterranean climate: a Mediterranean climate with a marked character of a continental climate. The continentalized Mediterranean climate is similar to a typical Mediterranean climate, but with more extreme temperatures typical of a continental climate. Lack of a marine influence leads to much more extreme temperatures: hotter summers and quite cold winters, with a daily oscillation of 18.5 °C (33.3 °F). Summer is the driest season, with temperatures often exceeding , sometimes reaching and exceeding . In winter, temperatures often drop below , producing frosts on clear nights, and occasional snow on cloudy nights. Castilla–La Mancha is part of what has traditionally been called España Seca ("Dry Spain"). It receives relatively scarce precipitation, much as in a typical Mediterranean climate. Precipitation presents a notable gradient from the center of the region, where it does not surpass per year, to the mountains where it can exceed per year, on the slopes of the Sierra de Gredos and the Serranía de Cuenca. The greater part of the region has less than of rain annually. The driest part of the region is along the Albacete-Hellín axis, with less than per year. History Early human history of the territory Prehistory and protohistory The presents material linked to the transition from earlier settlers to the Early Acheulean. Archaeological sites related to the Middle Acheulean in the current-day region lie on the Campo de Calatrava as well as in the source of the Villanueva river, the Guadiana catchment area and the Segura catchment area. The Upper Acheulean sites are mostly located within the limits of the current-day province of Ciudad Real, substantially increasing in number and territorial spread across the region for the ensuing Middle Paleolithic. The Upper Paleolithic in the region presents instances of the art of the Upper Paleolithic in the Serranía del Alto Tajo and the Upper Júcar. There are instances of Cardium pottery in Caudete from the Early Neolithic. The natural region of La Mancha presents a number of archaeological sites related to the so-called Culture of Las Motillas of the Bronze Age, tentatively considered as the earliest reported case of human culture