The Takla Makan’s climate is moderately warm and markedly continental, with a maximum annual temperature range of 70 °F (39 °C). Precipitation is extremely low, ranging from 1.5 inches (38 mm) per year in the west to 0.4 inch (10 mm) annually in the east. The air temperature in the summer is high, rising to as much as 100 °F (38 °C) on the eastern edge of the desert. In July the average air temperature is 77 °F (25 °C) in the eastern regions. Winters are cold: In January the average air temperature is 14 to 16 °F (−10 to −9 °C), and the lowest temperature reached in winter generally falls below −4 °F (−20 °C).