"Our good fall color's going to run through the middle of October," he said. The trees that have leaves left will be very colorful." "We anticipate it's really going to be next week when we see the reds and oranges," he said.Īnd despite the really long, hot summer, Tankersley is anticipating "good" fall color. The earliest trees - honey locusts - are starting to turn at the Chicago Botanic Garden, but the real show starts next week. "Ideal conditions are bright, sunny days with cool nights," Tankersley said. So when the temperatures drop, it signals it's time to go dormant, leaving the bright colors behind. Fall colors are the result of trees and plants getting ready for winter. "That's good," Boyce Tankersley, director of living plant documentation at Chicago Botanic Garden, said. What do the cooler temperatures mean for those fabulous fall colors of red, orange and gold? "Saturday night into Sunday morning, almost guarantees you're going to have some frost as you get away from the city." We will be nowhere near that high," ABC 7 Meteorologist Mike Caplan said Friday. In the Northern Hemisphere the June solstice marks. And it continues into the weekend cold, wind, and rain are expected for the first day of fall. A hemispheres winter solstice is the shortest day of the year and its summer solstice the years longest. In Chicago, it's felt like fall for the past week or so. The sun crosses the equator twice a year- on the autumnal equinox and spring equinox. CDT on Saturday, September 22, 2012, when the sun crosses directly over the equator as it heads south to its winter solstice position.
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