Chicago residents can expect a shift in weather as scattered showers move in for Saturday, September 12, and continue into Sunday, September 13, according to meteorologist Pete Sack. The forecast calls for partly cloudy skies with brief periods of rain, while temperatures dip into the mid-60s Fahrenheit, accompanied by a dew point near 62 degrees.

The change follows a warm start to the weekend, as cooler air pushes into the region. Sack notes that the cooler air mass will bring a noticeable drop in temperature later in the weekend, creating conditions more typical of early autumn. The brief rain episodes are expected to be intermittent, allowing for stretches of sunshine between showers.

Temperatures are projected to hover in the mid-60s throughout both days, providing a relief from the earlier warmth. The dew point, measured at 62 degrees, suggests that while the air will be cooler, moisture levels will remain relatively high, supporting the likelihood of scattered precipitation. Residents planning outdoor activities should anticipate occasional rain and prepare accordingly.

The overall pattern for the weekend features partly cloudy conditions, with the sky alternating between clear intervals and cloud cover that brings the brief showers. As the weekend progresses, the cooler air will dominate, reinforcing the forecasted temperature drop. The combination of cooler temperatures and intermittent rain may affect travel and outdoor events, prompting locals to stay informed about evolving conditions.

While the showers are expected to be brief, the shift in weather underscores the transition from the warmer early weekend period to a cooler, more variable pattern typical of September in Chicago. The forecast remains subject to updates, but current expectations point to a weekend marked by scattered rain and a noticeable dip in temperature.