Threats For Heavy Rain and Severe Thunderstorms Continue in the Plains; Fire Weather Conditions Worsen in the Southwest

On Monday and Tuesday, the focus for heavy rain and severe thunderstorms will continue in the Plains and central Mississippi River Valley. Meanwhile, hot conditions and Critical Fire Weather looms over the Great Basin and Southwest U.S. through midweek. Read More >

Current conditions at

Lewis University Airport (KLOT)

Lat: 41.6°NLon: 88.1°WElev: 669ft.

Fair

77°F

25°C

Humidity 61%
Wind Speed E 12 mph
Barometer 30.05 in
Dewpoint 63°F (17°C)
Visibility 9.00 mi
Heat Index79°F (26°C)
Last update 15 Jun 6:45 pm CDT
Extended Forecast for

Romeoville IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 63. East northeast wind around 5 mph becoming calm  after midnight. Winds could gust as high as 10 mph.

    Low: 63 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 87. Calm wind becoming southeast around 5 mph in the morning.

    High: 87 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 67. Southeast wind around 5 mph becoming south southwest after midnight.

    Low: 67 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms, mainly after 1pm.  Mostly sunny, with a high near 91. Heat index values as high as 98. Southwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 91 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms likely, mainly after 1am.  Mostly cloudy, with a low around 69. South southwest wind 5 to 10 mph.  Chance of precipitation is 60%.

    Low: 69 °F

    T-storms
    Likely

  • Wednesday

    Wednesday: Showers and thunderstorms likely.  Mostly cloudy, with a high near 83. Chance of precipitation is 70%.

    High: 83 °F

    T-storms
    Likely

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms, mainly before 1am.  Mostly cloudy, with a low around 64.

    Low: 64 °F

    Chance
    T-storms

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

  • Thursday Night

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

    Low: 62 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 63. East northeast wind around 5 mph becoming calm after midnight. Winds could gust as high as 10 mph.
Monday
Mostly sunny, with a high near 87. Calm wind becoming southeast around 5 mph in the morning.
Monday Night
Partly cloudy, with a low around 67. Southeast wind around 5 mph becoming south southwest after midnight.
Tuesday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 91. Heat index values as high as 98. Southwest wind 5 to 10 mph, with gusts as high as 15 mph.
Tuesday Night
Showers and thunderstorms likely, mainly after 1am. Mostly cloudy, with a low around 69. South southwest wind 5 to 10 mph. Chance of precipitation is 60%.
Wednesday
Showers and thunderstorms likely. Mostly cloudy, with a high near 83. Chance of precipitation is 70%.
Wednesday Night
A 40 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 64.
Juneteenth
Mostly sunny, with a high near 79.
Thursday Night
Mostly clear, with a low around 62.
Friday
Mostly sunny, with a high near 85.
Friday Night
Partly cloudy, with a low around 70.
Saturday
Mostly sunny, with a high near 92.
Saturday Night
Mostly clear, with a low around 73.
Sunday
Sunny, with a high near 92.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Romeoville IL
 41.65°N 88.07°W
5:42 pm CDT Jun 15, 2025
7pm CDT Jun 15, 2025-6pm CDT Jun 22, 2025
 
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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