An Indian summer is a heat wave that occurs in the autumn. It refers to a period of considerably above-normal temperatures, accompanied by dry and hazy conditions, usually after there has been a killing frost. This is also known as l'été indien, Nazomer, Altweibersommer, Estate di San Martino or Veranillo de San Martín. Indian Summer Party with DJ Rik.
Picture of the winners made by Ganymede. I blend in nicely with the background, as Tim said.