| NWS Forecast for: Mundelein IL Issued by: National Weather Service Chicago, IL Last Update: 10:45 am CDT Aug 13, 2026 |  |
Today: A chance of showers, then showers likely and possibly a thunderstorm after 4pm. Cloudy, with a temperature falling to around 73 by 4pm. East southeast wind 5 to 10 mph becoming north northeast in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms. Tonight: Showers and thunderstorms likely before 9pm, then showers likely and possibly a thunderstorm between 9pm and 10pm, then a chance of showers and thunderstorms after 10pm. Mostly cloudy, with a low around 67. East northeast wind around 5 mph, with gusts as high as 15 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible. Friday: A chance of showers and thunderstorms before 1pm, then a slight chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 78. East wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 40%. Friday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 68. East northeast wind 5 to 10 mph. Chance of precipitation is 60%. Saturday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 82. Southeast wind around 10 mph becoming south southwest in the afternoon. Winds could gust as high as 15 mph. Chance of precipitation is 70%. Saturday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 71. Chance of precipitation is 60%. Sunday: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 82. Sunday Night: Mostly cloudy, with a low around 65. Monday: Mostly sunny, with a high near 76. Monday Night: Mostly clear, with a low around 60. Tuesday: Mostly sunny, with a high near 79. Tuesday Night: Partly cloudy, with a low around 64. Wednesday: A chance of showers. Partly sunny, with a high near 79. | |
| Mundelein IL 42.26°N 88°W | |
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