The climate generally follows the topography, temperatures falling and precipitation rising with increasing elevation, although the southeastern corner of Azerbaijan, including its lowlands, is the wettest part of the country. The mean July temperature in the lowlands is 77°-81°F, with temperatures sometimes exceeding 100°F in Baku. The average January temperature in the lowlands is 32°-37°F. Highland temperatures average around 40°F in July and below 14°F in January. Annual precipitation averages less than 11 inches along most of the coast and in most of the Kura Depression; 12-35 inches in the foothills and mid altitude highlands; 39-51 inches along the southern slopes of the Greater Caucasus, and 47-71 inches in the southeastern Lenkoran Region. These climatic variations produce wet subtropical conditions in the Lenkoran lowlands where citrus fruits are grown; temperate semidesert on the Apsheron Peninsula and Kura lowlands; temperate moist conditions at middle elevations; and subalpine and alpine environments at the highest. Baku is marked by mild winters and hot summers. Rain can be fairly frequent, though usually light, in fall and winter, but is infrequent in the summer. In winter, the city is subject to severe north or northwest winds, but snow is infrequent.