IRON MOUNTAIN — Fall colors may emerge in the Upper Peninsula about a week from now and peak by the first or second week of October, according to fall foliage forecasts.

SmokyMountains.com’s interactive map predicts partial colors in the southern U.P. and northern Wisconsin by Sept. 22, and near peak at the end of the month. The website predicts near peak to peak conditions in the Keweenaw by Oct. 6

Nighttime temperatures in the 30s help prompt the color display. That becomes the norm at Iron Mountain-Kingsford in late September, although shorter days will bring on a change regardless. “A late frost and mild fall temperatures bode for a more demure display but still spectacular,” says Bill Cook, a retired Michigan State University Extension forester and biologist.

The National Weather S

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