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The autumnal equinox occurs at 9:29 p.m. Monday. Average temperatures are cooling, and days are growing shorter by about 3 minutes each day. But Chicago temperature will buck the odds during the week ahead.
Monday will still be on the cool side with highs for the most part in the upper 60s. But as the center of high pressure moves east and the air mass modifies, readings should rebound with highs during the last half of the workweek likely averaging about 10 degrees above normal.
And with high pressure dominating, Chicagoans may experience nearly a week without precipitation. The next chance of rain may be as far away as the first of October.
