People are clearing snow from the roof. Spiti Valley, Himachal Pradesh, IndiaSpiti Valley in winter, Winter in Spiti is extremely harsh and temperatures are known to sometimes fall to -40 degrees Celsius. Spiti in the winter is frigid and there is no running water in the taps. The valley and its surrounding regions are among the least populated regions of India. Spiti has a cold desert environment. The Bhoti-speaking local population follows Tibetan Buddhism.