Areas of Dangerous Heat and Severe Thunderstorms

Dangerous heat will build across the Southwest U.S. through the end of the week with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week before returning over much of the Plains into next week. Severe thunderstorms are expected across parts of the central and southern High Plains, central Great Lakes, and Ozarks Wednesday. Read More >

Hazardous Weather Conditions

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Overcast

69°F

21°C

Humidity 73%
Wind Speed SW 10 mph
Barometer 29.94 in (1012.9 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 26 Aug 3:51 am CDT
Extended Forecast for

2 Miles NNW Mundelein IL

  • Overnight

    Overnight: A 20 percent chance of showers.  Mostly cloudy, with a low around 64. South southwest wind around 10 mph, with gusts as high as 15 mph.

    Low: 64 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers and thunderstorms before 2pm, then a slight chance of showers between 2pm and 4pm, then a slight chance of showers and thunderstorms after 4pm.  Partly sunny, with a high near 83. South southwest wind 10 to 15 mph becoming west in the afternoon. Winds could gust as high as 20 mph.  Chance of precipitation is 40%.

    High: 83 °F

    Chance
    Showers then
    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 62. West northwest wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 62 °F

    Mostly Clear

  • Thursday

    Thursday: A slight chance of showers between 1pm and 4pm.  Increasing clouds, with a high near 79. North wind 5 to 10 mph.  Chance of precipitation is 20%.

    High: 79 °F

    Sunny then
    Slight Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 59. Northeast wind around 5 mph becoming calm  in the evening.

    Low: 59 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 80.

    High: 80 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 66.

    Low: 66 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A 20 percent chance of showers. Mostly cloudy, with a low around 64. South southwest wind around 10 mph, with gusts as high as 15 mph.
Wednesday
A chance of showers and thunderstorms before 2pm, then a slight chance of showers between 2pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 83. South southwest wind 10 to 15 mph becoming west in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 40%.
Wednesday Night
Mostly clear, with a low around 62. West northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Thursday
A slight chance of showers between 1pm and 4pm. Increasing clouds, with a high near 79. North wind 5 to 10 mph. Chance of precipitation is 20%.
Thursday Night
Mostly clear, with a low around 59. Northeast wind around 5 mph becoming calm in the evening.
Friday
Sunny, with a high near 78.
Friday Night
Partly cloudy, with a low around 60.
Saturday
Partly sunny, with a high near 80.
Saturday Night
Mostly cloudy, with a low around 66.
Sunday
Partly sunny, with a high near 85.
Sunday Night
A chance of showers. Partly cloudy, with a low around 71.
Monday
Partly sunny, with a high near 86.
Monday Night
A chance of showers. Mostly cloudy, with a low around 69.
Tuesday
A chance of showers. Partly sunny, with a high near 82.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNW Mundelein IL
 42.29°N 88.03°W
3:56 am CDT Aug 26, 2026
4am CDT Aug 26, 2026-6pm CDT Sep 1, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database