| NWS Forecast for: Westmont IL Issued by: National Weather Service Chicago, IL Last Update: 9:51 am CDT Jul 18, 2026 |  |
Today: Showers and thunderstorms likely, mainly between 2pm and 3pm. Partly sunny, with a high near 89. Heat index values as high as 97. West northwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms. Tonight: A 10 percent chance of showers and thunderstorms before 7pm. Patchy smoke after 9pm. Partly cloudy, with a low around 68. Northeast wind 5 to 10 mph, with gusts as high as 15 mph. Sunday: Patchy smoke. Mostly sunny, with a high near 82. East northeast wind 5 to 10 mph. Sunday Night: Mostly clear, with a low around 66. East wind around 5 mph becoming south after midnight. Winds could gust as high as 10 mph. Monday: A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 86. South southwest wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 20%. Monday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 71. Chance of precipitation is 70%. Tuesday: A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 85. Tuesday Night: Mostly clear, with a low around 64. Wednesday: Sunny, with a high near 78. Wednesday Night: Mostly clear, with a low around 60. Thursday: Sunny, with a high near 81. Thursday Night: Partly cloudy, with a low around 64. Friday: Mostly sunny, with a high near 83. | |
| Westmont IL 41.8°N 87.97°W | |
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