Illinois Weather Outlook: 4th of July in Cook County Expected to Be Hot and Dry — Storm Risk Returns Friday

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Chicago, Illinois – Cook County residents planning 4th of July barbecues, lakefront visits, or fireworks can expect ideal conditions this Thursday, with dry skies and highs in the low 80s.

According to the National Weather Service in Chicago, the Independence Day forecast is shaping up to be one of the most comfortable in recent years. After a stretch of stormy and humid conditions earlier in the week, Thursday, July 4, looks partly cloudy and breezy, with no rain expected across the county. Afternoon highs will reach around 83°F, with light winds off the lake making for a cooler feel near the shoreline.

Outdoor events, especially along Navy Pier, Grant Park, and suburban spots like Evanston or Oak Lawn, are in the clear for both afternoon gatherings and evening fireworks. Residents are advised to hydrate and use sun protection during peak hours between 1–4 p.m., when UV levels will be high.

Looking ahead, Friday brings the return of summer heat and storm chances. Highs will climb into the 90s, with a growing risk of late-day thunderstorms — potentially impacting Friday night travel or weekend plans.


🎆 4th of July Week Preview for Cook County:

  • Monday (June 30): High 85°F – Scattered thunderstorms with damaging wind risk. Stay weather-aware in the afternoon.
  • Tuesday: High 82°F – Sunny and pleasant, lower humidity.
  • Wednesday: High 87°F – Mostly sunny and hot, a classic summer day.
  • Thursday: High 83°F – Partly cloudy, dry, and warm — perfect for fireworks and outdoor celebrations.
  • Friday (4th of July): High 91°F – Storms may return late in the day. Monitor updates for potential delays or cancellations.

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