Chicago

Chicago Swelters Through 20th Day of Above-Normal Heat, On Brink of Setting New September Record

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Published on September 29, 2025
Chicago Swelters Through 20th Day of Above-Normal Heat, On Brink of Setting New September RecordSource: X/NWS Chicago

Chicago continues its bout with uncharacteristic heat as today marks the 20th consecutive day of above-normal temperatures, according to a FOX 32 Chicago report; this scorcher streak could set a new record for Chicago's September warmth. The current forecast has no rain on the horizon, potentially exacerbating drought conditions and placing September 2025 among the driest in Chicago's historical record.

In the absence of any significant lakeside cooling effect, highs today are expected to reach the mid to upper 80s, still below the record 99 degrees for this date, yet the ongoing heat is relentless, as daily highs through the upcoming weekend will hover between 80° and 86° as per the National Weather Service. In an uncanny twist of meteorological fate, Chicago stands to break its own record for the most days with temperatures cresting 80° Fahrenheit from September 15-30, a distinction it previously shared.

The weather outlook ahead remains dry and sunny, with the forecast from the National Weather Service projecting a high near 82 for today; the clear skies at night will only dip to a low around 64. This pattern is set to continue, with temperatures slightly cooling to the mid-70s by mid-week.

While Chicagoans may enjoy the extra doses of summer-like sun, concerns are rising about the prolonged dry spell, with no significant precipitation in sight for at least another week, and the city is likely to see worsening drought conditions as September concludes. Residents and local businesses are advised to take proper precautions against the dry weather and stay tuned to updates, as heat and lack of rainfall persist in a city more accustomed to a temperate fall.