September marks the beginning of autumn according to the meteorological calendar. This system defines seasons by consistent three-month periods, aligning with annual temperature cycles.
The meteorological calendar divides the year into four distinct seasons, with each season comprising three full months. This approach provides a consistent framework for meteorological observations and climate statistics, as it groups months with similar temperature characteristics. Under this widely recognized definition, the first day of autumn is consistently September 1st, and this season concludes on November 30th.
Understanding the Meteorological Seasons
The breakdown of seasons by the meteorological calendar is as follows:
| Season | Months |
|---|---|
| Spring | March, April, May |
| Summer | June, July, August |
| Autumn | September, October, November |
| Winter | December, January, February |
As shown in the table, September is the first month of the autumn season. This consistent system helps meteorologists and climatologists analyze seasonal patterns and climate change more effectively by standardizing the periods for seasonal data collection and comparison.
