We're set for an Indian summer here too, sunshiny days until at least the early part of next week with temperatures in the mid-seventies in American money. Strictly speaking there should have been the first frost first, but we have to ignore that ruling here in Cornwall as our first frost is typically well into November or even as late as January. A warm spell around 18 October is sometimes called St Luke's summer, and, if around 11 November, St Martin's summer, after the respective feast days of those saints. But Indian summer cuts it for any nice weather after the equinox. Quiet weather in mid-October with a hint of air frost gives us our best autumn colours, not too frequent an occurrence round here these days.