Weather forecast for: Calumet City IL
Last Update: 6:36 pm CDT Aug 5, 2026
Tonight: Showers likely and possibly a thunderstorm before 9pm, then a chance of showers between 9pm and 10pm, then a chance of showers and thunderstorms after 10pm. Patchy fog after 4am. Otherwise, cloudy, with a low around 69. North northeast wind around 5 mph becoming south after midnight. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday: A chance of showers, with thunderstorms also possible after 1pm. Patchy fog before 7am. Otherwise, mostly cloudy, with a high near 78. South wind around 5 mph becoming west southwest in the afternoon. Chance of precipitation is 30%.
Thursday Night: Mostly cloudy, with a low around 66. Southeast wind around 5 mph becoming calm in the evening.
Friday: A 20 percent chance of showers after 1pm. Partly sunny, with a high near 83. Calm wind becoming southwest around 5 mph in the afternoon.
Friday Night: A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Southwest wind around 5 mph, with gusts as high as 10 mph.
Saturday: Mostly sunny, with a high near 83.
Saturday Night: A 30 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 67.
Sunday: A chance of showers and thunderstorms. Partly sunny, with a high near 83.
Sunday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 69.
Monday: A chance of showers and thunderstorms. Mostly cloudy, with a high near 83.
Monday Night: Showers likely. Mostly cloudy, with a low around 69.
Tuesday: A chance of showers. Partly sunny, with a high near 78.
Tuesday Night: A chance of showers. Mostly cloudy, with a low around 65.
Wednesday: A chance of showers. Partly sunny, with a high near 77.