Severe Thunderstorms and Heavy Rainfall for the Southwest; Heat Spreads Across the Center of the Nation

Moisture will continue to move into areas of the West. This will increase showers and thunderstorms coverage and intensity, with the risk of flash flooding and damaging wind gusts. Meanwhile, heat across the Southwest will expand into the center of the nation this weekend into early next week. Trends favor this heat will spread across the Ohio Valley, mid-Atlantic next week. Read More >

Hazardous Weather Conditions

Current conditions at

Lewis University Airport (KLOT)

Lat: 41.6°NLon: 88.1°WElev: 669ft.

A Few Clouds

73°F

23°C

Humidity 78%
Wind Speed S 9 mph
Barometer 30.05 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 29 Aug 8:35 pm CDT
Extended Forecast for

2 Miles NW Chicago/Romeoville, Lewis University Airport IL

  • Tonight

    Tonight: Isolated showers after 5am.  Mostly cloudy, with a low around 68. South wind around 10 mph.  Chance of precipitation is 10%.

    Low: 68 °F

    Mostly Cloudy
    then Isolated
    Showers

  • Sunday

    Sunday: Scattered showers and thunderstorms before 10am, then a slight chance of showers and thunderstorms after 3pm.  Partly sunny, with a high near 86. South wind 10 to 15 mph, with gusts as high as 25 mph.  Chance of precipitation is 30%.

    High: 86 °F

    Scattered
    Showers then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: A 10 percent chance of showers and thunderstorms before 7pm.  Cloudy, then gradually becoming partly cloudy, with a low around 70. South wind around 10 mph.

    Low: 70 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Monday

    Monday: A 10 percent chance of showers and thunderstorms before 7am.  Partly sunny, with a high near 91. Heat index values as high as 97. South southwest wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 91 °F

    Slight Chance
    T-storms then
    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 73. South southwest wind 5 to 10 mph.

    Low: 73 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 93.

    High: 93 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 75.

    Low: 75 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 72.

    Low: 72 °F

    Partly Cloudy

Detailed Forecast

Tonight
Isolated showers after 5am. Mostly cloudy, with a low around 68. South wind around 10 mph. Chance of precipitation is 10%.
Sunday
Scattered showers and thunderstorms before 10am, then a slight chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 86. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.
Sunday Night
A 10 percent chance of showers and thunderstorms before 7pm. Cloudy, then gradually becoming partly cloudy, with a low around 70. South wind around 10 mph.
Monday
A 10 percent chance of showers and thunderstorms before 7am. Partly sunny, with a high near 91. Heat index values as high as 97. South southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Monday Night
Partly cloudy, with a low around 73. South southwest wind 5 to 10 mph.
Tuesday
Mostly sunny, with a high near 93.
Tuesday Night
Partly cloudy, with a low around 75.
Wednesday
Sunny, with a high near 93.
Wednesday Night
Partly cloudy, with a low around 72.
Thursday
Mostly sunny, with a high near 88.
Thursday Night
Partly cloudy, with a low around 69.
Friday
Partly sunny, with a high near 86.
Friday Night
Partly cloudy, with a low around 69.
Saturday
Mostly sunny, with a high near 86.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NW Chicago/Romeoville, Lewis University Airport IL
 41.63°N 88.13°W
6:06 pm CDT Aug 29, 2026
8pm CDT Aug 29, 2026-6pm CDT Sep 5, 2026
 
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Additional Resources

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