Sunday, November 23, 2008
On Sept. 20, 2008, I went for a comfortable autumn swim at Castle Rock Lake, near Necedah, Wis. That swim, with a young larva, came just 31 days before a low temperature of 19 degrees at the same site and about 50 days before a low of 13 degrees above zero. In Chicago, the seasonal change has also been precipitous. We went from a high of 70 on Nov. 5 to a high of 30 16 days later on Nov. 21. It snowed on Nov. 9 here and a few times since.