The term used for a period of unseasonable dry, warm weather in autumn from September to November is Indian summer. It is a period of warm weather that occurs after the first frost of the season. The name comes from the Native American belief that it is caused by a warm wind blowing from India.
The term used for a period of unseasonable dry, warm weather in autumn from September to November is an Indian summer. This phenomenon is characterized by sunny and warm weather, and is usually accompanied by clear skies and light winds.
"Indian Summer" refers to a period of unseasonably warm, dry weather that occurs in autumn, typically from September to November, after a spell of colder weather earlier in the season.