The third way of defining autumn is to use what are known as phenological indicators. On this basis, for most of the northern hemisphere the autumn months are usually September, October, and November. Meteorologicalīy contrast, meteorologists tend to divide seasons into periods of three whole months based on average monthly temperatures, with summer as the warmest and winter as the coldest. However, there is disagreement between those who see the equinox or solstice as the start of the season, and those who hold that it represents the middle of the season. AstronomicalĪstronomically, the four seasons centre around the equinoxes and solstices. Even though Halloween is only celebrated on October 31st, people start getting ready for it much earlier, closer to when Fall starts.There are three main different ways of defining autumn: astronomical, meteorological and phenological. On this day, people carve scary faces and designs into pumpkins, dress up in costumes, decorate their homes and go trick or treating. The popularity of pumpkins during fall is also tied to the popular holiday of Halloween. In the United States, pumpkins and apples are often associated with Fall, as this is the perfect season to harvest them and use them. Those of Jewish faith also celebrate Sukkot during this period. The most significant celebration tied to the harvest season in the United States is, of course, Thanksgiving. Since ancient times, people have been welcoming the harvest season with traditions, rituals and festivals. One of the most important events that happens with the arrival of Fall is the Harvest season. The start of Fall, and specifically the Autumnal Equinox, is a reason to celebrate in many cultures and religions all over the world. It is also during fall that some of America's favorite activities take place, such as pumpkin picking, country fairs, and hiking.įall Traditions, Customs and Associations However, some states are picture-perfect during fall, with foliage turning into beautiful shades of reds and oranges. While Fall is usually a cold month, some states in America don't really experience the change in temperature, as is the case of California and Florida, where it remains a moderate 72☏. The change in weather and sunlight affects vegetation such as plants and trees, whose leaves start turning red, orange, or yellow before they shed. With the transition from Summer into fall, the temperatures start getting colder, and the days become shorter. After the Autumnal Equinox, the days start to get shorter and the nights get longer, as the Sun rises late and sets early. On the day of the Autumnal Equinox, day and night are roughly the same lengths. This event marks the start of Fall in the Northern Hemisphere and the beginning of Spring in the Southern Hemisphere. The Autumnal Equinox is also known as the Fall or September Equinox, and it happens when the Sun crosses the celestial equator towards the South. In 2021, Fall will last from September 22 until December 21, which is when Winter starts. This day is also known as the Autumnal Equinox.įall is the transitional season between Summer and Winter. In the Northern Hemisphere, the astronomical Start of Fall is on September 22, at 3:21 P.M. First Day of Fall When does Fall start in 2021?

When does autumn start