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.

Partly Cloudy

70°F

21°C

Humidity 100%
Wind Speed SW 3 mph
Barometer 29.94 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 19 Aug 1:15 am CDT
Extended Forecast for

2 Miles NW Bolingbrook IL

  • Overnight

    Overnight: Patchy fog.  Otherwise, mostly cloudy, with a low around 66. West northwest wind around 5 mph.

    Low: 66 °F

    Patchy Fog

  • Wednesday

    Wednesday: A 20 percent chance of showers after 2pm.  Patchy fog before 8am.  Otherwise, partly sunny, with a high near 80. North wind around 5 mph.

    High: 80 °F

    Patchy Fog
    then Slight
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 63. Northeast wind 5 to 10 mph.

    Low: 63 °F

    Mostly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 80. Calm wind becoming east northeast around 5 mph.

    High: 80 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 62. East wind around 5 mph becoming south after midnight.

    Low: 62 °F

    Mostly Clear

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 78.

    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: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

  • Saturday Night

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

    Low: 61 °F

    Mostly Clear

Detailed Forecast

Overnight
Patchy fog. Otherwise, mostly cloudy, with a low around 66. West northwest wind around 5 mph.
Wednesday
A 20 percent chance of showers after 2pm. Patchy fog before 8am. Otherwise, partly sunny, with a high near 80. North wind around 5 mph.
Wednesday Night
Mostly cloudy, with a low around 63. Northeast wind 5 to 10 mph.
Thursday
Sunny, with a high near 80. Calm wind becoming east northeast around 5 mph.
Thursday Night
Mostly clear, with a low around 62. East wind around 5 mph becoming south after midnight.
Friday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 78.
Friday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 64. Chance of precipitation is 20%.
Saturday
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 59.
Monday
Mostly sunny, with a high near 77.
Monday Night
Partly cloudy, with a low around 61.
Tuesday
Mostly sunny, with a high near 79.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NW Bolingbrook IL
 41.72°N 88.1°W
1:21 am CDT Aug 19, 2026
1am CDT Aug 19, 2026-6pm CDT Aug 25, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database