Autumnal

{
  "id": "MLC-T-MET-003731",
  "term": "Autumnal",
  "field": "Meteorology and atmospheric science",
  "definition": "Relating to or characteristic of the season of autumn. In meteorology, this describes weather patterns and atmospheric conditions that occur during the transition from summer to winter, including cooling temperatures, decreasing daylight, and increased frequency of frontal systems in mid-latitudes. The autumnal equinox, occurring around September 22 in the Northern Hemisphere, marks the astronomical start of the season.",
  "url": "https://mlchart.com/terminology/meteorology/autumnal/"
}