Kansas's continental climate is highly changeable. The average mean temperature is 55°F (13°C). The record high is 121°F (149°C), recorded near Alton on 24 July 1936, and the record low, –40°F (–40°C), was registered at Lebanon on 13 February 1905. The normal annual precipitation ranges from slightly more than 40 in (101.6 cm) in the southeast to as little as 16 in (40.6 cm) in the west; in Wichita, average annual precipitation (1971–2000) was 30.4 in (77.2 cm). The overall annual precipitation for the state averages 27 in (68.6 cm), although years of drought have not been uncommon. About 70–77% of the precipitation falls between 1 April and 30 September. The annual mean snowfall ranges from about 36 in (91.4 cm) in the extreme northwest to less than 11 in (27.9 cm) in the far southeast. Tornadoes are a regular fact of life in Kansas. Dodge City is said to be the windiest city in the US, with an average wind speed of 14 mph (23 kph).