Heat Expands for Center of the Nation; Severe Thunderstorms for Plains and Upper Midwest

Dangerous heat expands across the Desert Southwest, Plains, Mississippi Valley and Midwest. Critical fire weather for portions of the Intermountain West. Risk for severe thunderstorms and flash flooding across the Upper Midwest/Great Lakes, Ohio Valley, and portions of the mid-Atlantic. Active monsoonal moisture fuels thunderstorms over the Southwest. Hurricane Fausto in the Pacific, should weaken Read More >

Hazardous Weather Conditions

Current conditions at

Lewis University Airport (KLOT)

Lat: 41.6°NLon: 88.1°WElev: 669ft.

Fog/Mist

73°F

23°C

Humidity 100%
Wind Speed S 8 mph
Barometer 29.94 in
Dewpoint 73°F (23°C)
Visibility 4.00 mi
Last update 26 Jul 7:45 am CDT
Extended Forecast for

New Lenox IL

  • Today

    Today: Cloudy, then gradually becoming mostly sunny, with a high near 88. Heat index values as high as 99. Southwest wind around 5 mph, with gusts as high as 10 mph.

    High: 88 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 73. South southwest wind around 5 mph.

    Low: 73 °F

    Partly Cloudy
    then Chance
    T-storms

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms, mainly before 1pm.  Mostly sunny, with a high near 91. Heat index values as high as 104. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 91 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: A 40 percent chance of showers and thunderstorms before 1am.  Partly cloudy, with a low around 73. West southwest wind 10 to 15 mph becoming north northwest after midnight. Winds could gust as high as 20 mph.

    Low: 73 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: Mostly sunny, with a high near 83. North northeast wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 83 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

Detailed Forecast

Today
Cloudy, then gradually becoming mostly sunny, with a high near 88. Heat index values as high as 99. Southwest wind around 5 mph, with gusts as high as 10 mph.
Tonight
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 73. South southwest wind around 5 mph.
Monday
A 40 percent chance of showers and thunderstorms, mainly before 1pm. Mostly sunny, with a high near 91. Heat index values as high as 104. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Monday Night
A 40 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 73. West southwest wind 10 to 15 mph becoming north northwest after midnight. Winds could gust as high as 20 mph.
Tuesday
Mostly sunny, with a high near 83. North northeast wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 64.
Wednesday
Sunny, with a high near 82.
Wednesday Night
Mostly clear, with a low around 62.
Thursday
Sunny, with a high near 86.
Thursday Night
Partly cloudy, with a low around 65.
Friday
A chance of showers. Partly sunny, with a high near 85.
Friday Night
A chance of showers. Mostly cloudy, with a low around 66.
Saturday
Mostly sunny, with a high near 85.
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ABOUT THIS FORECAST

 
Point Forecast:
New Lenox IL
 41.52°N 87.96°W
8:16 am CDT Jul 26, 2026
8am CDT Jul 26, 2026-6pm CDT Aug 1, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database