Posted on October 10, 2021October 10, 2021 by WillemSunday/ it feels like fall It was only 56 °F (13 °C) when I went out for a walk at 6 pm today. Still not scarf & glove weather, though. I’d say those are for 45°F (7°C) and below. This is 17th Ave East here on Capitol Hill. The leaves are falling, the way they always do this time of year. When fall comes, the green chlorophyll of summer breaks down in leaves and its nutrients go back to the trunk and roots. These leaves turn yellow. The leaves on some trees turn red, and botanists are still not 100% sure why they turn red. The red color is due to a new pigment in the leaf called anthocyanin, which has to be made afresh as autumn takes hold. It may contain antioxidants to help against harsh winter conditions.