Chicago, Illinois – Anyone heading to Lake Michigan beaches over the next 24 hours should use caution as dangerous swimming conditions remain in place, even as cooler-than-normal temperatures continue across northern Illinois through the middle of the week.
According to the National Weather Service in Chicago, temperatures will remain below seasonal averages through Friday before warming into the weekend. A slight chance of showers continues tonight and Wednesday, mainly for communities near and south of Lake Michigan, while high swim risk conditions are expected to persist through Wednesday before improving Thursday.
Afternoon highs on Wednesday will range from 70 to 76 degrees, with sunshine mixing with scattered clouds. Communities closest to the lake will remain noticeably cooler than inland areas. Overnight lows will fall into the mid-50s to lower 60s, making for comfortable sleeping conditions across the Chicago metro.
Beachgoers are urged to stay out of the water where red flags are posted, as powerful currents can quickly pull even experienced swimmers away from shore. Anyone visiting the lakefront should check local beach conditions before entering the water and follow instructions from lifeguards and local officials.
A warming trend begins Thursday with highs reaching 75 to 81 degrees, followed by 77 to 83 degrees Friday and 80 to 85 degrees Saturday, signaling a return to more typical summer weather across the region. Additional weather updates will be issued if shower chances or lake hazards change.
Four-Day Forecast for Chicago, Illinois
- Tonight: Partly cloudy with a 40% chance of showers. Low 55–63°. High swim risk continues along Lake Michigan.
- Wednesday: Partly sunny with a slight chance of showers. High 70–76°. Low 53–59°. High swim risk remains.
- Thursday: Sunny and warmer. High 75–81°. Low 56–63°.
- Friday: Partly cloudy. High 77–83°. Low 56–64°.
- Saturday: Partly cloudy and warmer. High 80–85°. Low 64–72°.
