Severe Weather and Flooding Threats for the Central U.S.; Dangerous Heat in the Southern and Western U.S.

Severe weather and flooding threats will continue for portions of the central U.S. over the next couple of days, with multiple rounds of thunderstorms expected. Dangerous heat will persist across the southern and western U.S. through mid-week. Hot and dry conditions will fuel fire weather concerns for the Intermountain West, where dry thunderstorms may spark additional wildfires. Read More >

Current conditions at

Lewis University Airport (KLOT)

Lat: 41.6°NLon: 88.1°WElev: 669ft.

Fair

64°F

18°C

Humidity 64%
Wind Speed E 5 mph
Barometer 30.19 in
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 23 Jun 9:35 pm CDT
Extended Forecast for

Romeoville IL

  • Tonight

    Tonight: Partly cloudy, with a low around 56. East wind around 5 mph becoming south after midnight.

    Low: 56 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm.  Partly sunny, with a high near 78. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 78 °F

    Mostly Sunny
    then Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely, mainly before 9pm.  Partly cloudy, with a low around 60. Southwest wind 5 to 10 mph, with gusts as high as 15 mph.  Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 60 °F

    Showers
    Likely then
    Partly Cloudy

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 1pm.  Mostly sunny through mid morning, then becoming cloudy, with a high near 79. West wind 5 to 10 mph.

    High: 79 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 59. Northeast wind around 5 mph, with gusts as high as 10 mph.

    Low: 59 °F

    Mostly Cloudy

  • Friday

    Friday: A 30 percent chance of showers, mainly before 1pm.  Partly sunny, with a high near 76.

    High: 76 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A 30 percent chance of showers before 1am.  Partly cloudy, with a low around 61.

    Low: 61 °F

    Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of showers after 1am.  Partly cloudy, with a low around 67.

    Low: 67 °F

    Partly Cloudy
    then Chance
    Showers

Detailed Forecast

Tonight
Partly cloudy, with a low around 56. East wind around 5 mph becoming south after midnight.
Wednesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm. Partly sunny, with a high near 78. Southwest wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers and thunderstorms likely, mainly before 9pm. Partly cloudy, with a low around 60. Southwest wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny through mid morning, then becoming cloudy, with a high near 79. West wind 5 to 10 mph.
Thursday Night
Mostly cloudy, with a low around 59. Northeast wind around 5 mph, with gusts as high as 10 mph.
Friday
A 30 percent chance of showers, mainly before 1pm. Partly sunny, with a high near 76.
Friday Night
A 30 percent chance of showers before 1am. Partly cloudy, with a low around 61.
Saturday
Mostly sunny, with a high near 83.
Saturday Night
A chance of showers after 1am. Partly cloudy, with a low around 67.
Sunday
Partly sunny, with a high near 88.
Sunday Night
Partly cloudy, with a low around 73.
Monday
Sunny, with a high near 92.
Monday Night
Mostly clear, with a low around 74.
Tuesday
Mostly sunny, with a high near 92.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Romeoville IL
 41.66°N 88.1°W
8:16 pm CDT Jun 23, 2026
9pm CDT Jun 23, 2026-6pm CDT Jun 30, 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