Thunderstorms and Heavy Rain in the Mid-South; Heat Continues in the Southeast and Southwest

Severe thunderstorms and heavy rain are expected across portions of the mid-Mississippi Valley into the Ohio Valley and portions of Arizona. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that, when combined with oppressive dew points, little-to-no relief from the scorching daytime highs will be available. Read More >

Hazardous Weather Conditions

Current conditions at

Lewis University Airport (KLOT)

Lat: 41.6°NLon: 88.1°WElev: 669ft.

Fair

72°F

22°C

Humidity 100%
Wind Speed NE 5 mph
Barometer 29.95 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 19 Aug 8:45 am CDT
Extended Forecast for

4 Miles NNE New Lenox IL

  • Today

    Today: A 20 percent chance of showers after 2pm.  Mostly cloudy, with a high near 79. Calm wind becoming north northwest around 5 mph in the afternoon.

    High: 79 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Tonight

    Tonight: Mostly cloudy, with a low around 62. Northeast wind around 5 mph.

    Low: 62 °F

    Mostly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 79. Calm wind becoming east northeast around 5 mph.

    High: 79 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 61. East wind around 5 mph becoming calm.

    Low: 61 °F

    Mostly Clear

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 78. Southwest wind 5 to 10 mph.

    High: 78 °F

    Mostly Sunny
    then Chance
    Showers

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms.  Partly cloudy, with a low around 64. Chance of precipitation is 20%.

    Low: 64 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms.  Mostly sunny, with a high near 79.

    High: 79 °F

    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

Detailed Forecast

Today
A 20 percent chance of showers after 2pm. Mostly cloudy, with a high near 79. Calm wind becoming north northwest around 5 mph in the afternoon.
Tonight
Mostly cloudy, with a low around 62. Northeast wind around 5 mph.
Thursday
Sunny, with a high near 79. Calm wind becoming east northeast around 5 mph.
Thursday Night
Mostly clear, with a low around 61. East wind around 5 mph becoming calm.
Friday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 78. Southwest wind 5 to 10 mph.
Friday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 64. Chance of precipitation is 20%.
Saturday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 79.
Saturday Night
Mostly clear, with a low around 61.
Sunday
Mostly sunny, with a high near 76.
Sunday Night
Partly cloudy, with a low around 58.
Monday
Mostly sunny, with a high near 76.
Monday Night
Partly cloudy, with a low around 60.
Tuesday
Mostly sunny, with a high near 79.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNE New Lenox IL
 41.56°N 87.96°W
3:46 am CDT Aug 19, 2026
8am CDT Aug 19, 2026-6pm CDT Aug 25, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database