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Mount Prospect Weather Warning NWS WEATHER ALERT FOR THE MOUNT PROSPECT, IL AREA - Issued: 944 AM CDT Fri Sep 4 2026 Mount Prospect Weather Warning

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Lightning Observed at Mount Prospect (60056), temperature is 78°F26°C, dew point 71°F22°C, humidity 79%. Wind direction is ENE at 17 mphat 27 km/h with visibility of 10 mi16 km. Barometric pressure is 30.04 in1017 mb. Last update: 11:38 am.*
*Time is approximately 11:38 am Fri, Sep 04, 2026. Time will be within 15 minutes of current local time. Mount Prospect weather forecast data is updated every 15 minutes.

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Michigan cold is the kind that makes you grateful for walls, windows, and whatever game is on TV. ―Rich
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Mount Prospect IL Weather - 12:38 pm

Mount Prospect Weather Forecast

Weather forecast for: Mount Prospect IL
Last Update: 11:30 am CDT Sep 4, 2026
Today: A 20 percent chance of showers and thunderstorms before noon. Mostly sunny, with a high near 93. Heat index values as high as 101. East wind 5 to 15 mph becoming south in the afternoon. Winds could gust as high as 25 mph.
Tonight: A 30 percent chance of showers and thunderstorms, mainly between midnight and 4am. Partly cloudy, with a low around 74. West wind around 5 mph becoming calm in the evening.
Saturday: Mostly sunny, with a high near 84. North northeast wind 5 to 10 mph.
Saturday Night: Partly cloudy, with a low around 68. North northeast wind 5 to 10 mph, with gusts as high as 15 mph.
Sunday: Mostly sunny, with a high near 81. East wind 5 to 10 mph.
Sunday Night: Partly cloudy, with a low around 65.
Labor Day: Mostly sunny, with a high near 82.
Monday Night: Mostly cloudy, with a low around 66.
Tuesday: Partly sunny, with a high near 85.
Tuesday Night: A chance of showers after 1am. Partly cloudy, with a low around 72.
Wednesday: Partly sunny, with a high near 88.
Wednesday Night: A chance of showers. Mostly cloudy, with a low around 70.
Thursday: Partly sunny, with a high near 83.

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