| NWS Forecast for: Marengo IL Issued by: National Weather Service Chicago, IL Last Update: 10:06 pm CDT Jul 13, 2026 | |
Tonight: Clear, with a low around 69. Calm wind. Tuesday: Sunny, with a high near 93. Heat index values as high as 98. Calm wind becoming north northwest around 5 mph in the afternoon. Tuesday Night: Mostly clear, with a low around 71. West southwest wind around 5 mph. Wednesday: Sunny, with a high near 94. Heat index values as high as 99. West wind around 5 mph. Wednesday Night: Mostly clear, with a low around 71. West northwest wind around 5 mph becoming calm. Thursday: A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Sunny, with a high near 92. Chance of precipitation is 20%. Thursday Night: A slight chance of thunderstorms before 7pm. Mostly clear, with a low around 70. Chance of precipitation is 10%. Friday: A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89. Friday Night: Partly cloudy, with a low around 70. Saturday: A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89. Saturday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 68. Sunday: Mostly sunny, with a high near 85. Sunday Night: A chance of showers. Mostly clear, with a low around 64. Monday: Sunny, with a high near 84. | |
| Marengo IL 42.24°N 88.62°W | |
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