<P> Although favorable conditions for tornadoes in the United States can occur at any time , they are most common in spring and least common in winter . Because spring is a transitional period for the climate , there are more chances of cooler air meeting with warmer air , resulting in more thunderstorms . Tornadoes can also be spawned by landfalling tropical cyclones , which usually occur in late summer and autumn . In the United States , thunderstorms capable of producing tornadoes usually form when the temperature is at its highest , typically from 4 : 00 p.m. to 7 : 00 p.m. </P>
<P> Although favorable conditions for tornadoes in the United States can occur at any time , they are most common in spring and least common in winter . Because spring is a transitional period for the climate , there are more chances of cooler air meeting with warmer air , resulting in more thunderstorms . Tornadoes can also be spawned by landfalling tropical cyclones , which usually occur in late summer and autumn . In the United States , thunderstorms capable of producing tornadoes usually form when the temperature is at its highest , typically from 4 : 00 p.m. to 7 : 00 p.m. </P>
which season experiences the largest percentage of tornadoes on average in the united states
which season experiences the largest percentage of tornadoes on average in the united states
spring
spring