The four seasons—spring, summer, fall, and winter—follow one another
regularly. Each has its own light, temperature, and weather patterns
that repeat yearly.
Learn more on National Geographic Autumn, also known as fall in North American English,
is one of the four temperate seasons on Earth. Outside the tropics,
autumn marks the transition from summer to winter, in September or
March. Autumn is the season when the duration of daylight becomes
noticeably shorter and the temperature cools considerably.
Learn more on Wikipedia