The city lies along the Ob River in the West Siberian Plain. To the south is the Ukok Plateau part of the UNESCO World Heritage Site entitled "Golden Mountains of Altai". The climate is sharply continental, with very severe, cold and snowy winters and hot and dry summers. Temperatures in summer range from 10 to 30 °C (50...85 °F), in winter -5 to -25 °C (20...-10 °F), but can reach -45 °C (-50 °F) in winter and 35 °C (95 °F) in summer. The difference between the highest and the lowest temperature is 83 °C (181 °F). Most of the time the weather is sunny, with an average of 2880 hours of sunshine per year.