Fall has arrived in Chicago. Here’s when to expect the first freeze and snowfall.

Raise a pumpkin spice latte to fall’s return — the autumnal equinox happened on Sept. 22.

Each day after, we lose a little bit more sunlight until the winter solstice on

, the shortest day and longest night of the year. The same phenomenon will take place again next year to mark the spring, or vernal, equinox on…