Chicago, Illinois – Steamy air and scattered thunderstorms will keep much of Chicago on alert through the weekend, with weather conditions growing more unsettled late Sunday and into Monday. Heat indices are expected to approach 100°F Friday and Saturday, making outdoor activity hazardous for anyone without adequate shade or hydration.
According to the National Weather Service in Chicago, isolated to widely scattered storms will persist through Friday morning, mainly north of Interstate 80. High temperatures will reach the upper 80s and low 90s, with only brief breaks from oppressive humidity. While most storms remain hit-or-miss through Saturday, the potential for more organized showers and thunderstorms increases by Sunday, especially north and west of I-55.
Commuters and weekend travelers should be prepared for sudden downpours, lightning, and localized flooding, particularly late Sunday and again Monday when scattered storms become more widespread. Downtown Chicago can expect muggy overnight lows in the 70s, limiting relief from the day’s heat. Residents are advised to stay hydrated, avoid strenuous outdoor activities during peak heat, and keep electronic devices charged in case of power outages.
The threat of storms and high humidity is expected to continue into early next week, with additional watches and warnings possible if patterns intensify. Stay tuned to the latest updates for shifting storm tracks and potential advisories.
Five Day Forecast for Chicago, IL:
- Friday: Isolated AM storms, hot and humid. Highs 88–93°F. Lows 71–75°F.
- Saturday: Widely scattered PM storms, heat index near 100°F. Highs 88–94°F. Lows 70–76°F.
- Sunday: Humid, higher storm chances especially NW of I-55. Highs 84–92°F. Lows 68–71°F.
- Monday: Scattered storms likely, muggy. Highs 83–89°F. Lows 66–70°F.
- Tuesday: Periodic storms possible, still humid. Highs in the upper 80s.
