Dangerous heat and humidity from the central U.S. to East Coast this weekend

Hot and very humid conditions will push the heat index to well over 100 degrees across a large portion of the central and eastern U.S. Excessive Heat Warnings and Heat Advisories are in effect for much of the Plains, Miss. Valley, Midwest, Ohio Valley, Mid-Atlantic and southern states. Be very cautious if you must do outdoor activities in these areas during the afternoon and evening this weekend. Read More >

Current conditions at

Lewis University Airport (KLOT)

Lat: 41.6°NLon: 88.1°WElev: 669ft.

Fair

70°F

21°C

Humidity 92%
Wind Speed S 5 mph
Barometer 29.93 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 24 Jul 3:35 am CDT
Extended Forecast for

Romeoville IL

Heat Advisory July 24, 11:00am until July 24, 07:00pm
Click here for hazard details and duration
Heat Advisory
  • Overnight

    Overnight: Mostly cloudy, with a low around 72. South wind around 5 mph.

    Mostly Cloudy

    Low: 72 °F

  • Sunday

    Sunday: A 50 percent chance of showers and thunderstorms after 3pm.  Partly sunny, with a high near 90. Heat index values as high as 103. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Partly Sunny
    then Chance
    T-storms

    High: 90 °F

  • Sunday
    Night

    Sunday Night: A 30 percent chance of showers and thunderstorms, mainly before 7pm.  Mostly cloudy, with a low around 71. West southwest wind 5 to 10 mph becoming north northwest after midnight.

    Chance
    T-storms

    Low: 71 °F

  • Monday

    Monday: Mostly sunny, with a high near 87. Northwest wind around 5 mph.

    Mostly Sunny

    High: 87 °F

  • Monday
    Night

    Monday Night: Mostly clear, with a low around 66. North wind around 5 mph becoming calm  in the evening.

    Mostly Clear

    Low: 66 °F

  • Tuesday

    Tuesday: Sunny, with a high near 86.

    Sunny

    High: 86 °F

  • Tuesday
    Night

    Tuesday Night: Mostly clear, with a low around 69.

    Mostly Clear

    Low: 69 °F

  • Wednesday

    Wednesday: Mostly sunny, with a high near 85.

    Mostly Sunny

    High: 85 °F

  • Wednesday
    Night

    Wednesday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 68.

    Chance
    T-storms

    Low: 68 °F

Detailed Forecast

Overnight
Mostly cloudy, with a low around 72. South wind around 5 mph.
Sunday
A 50 percent chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 90. Heat index values as high as 103. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Sunday Night
A 30 percent chance of showers and thunderstorms, mainly before 7pm. Mostly cloudy, with a low around 71. West southwest wind 5 to 10 mph becoming north northwest after midnight.
Monday
Mostly sunny, with a high near 87. Northwest wind around 5 mph.
Monday Night
Mostly clear, with a low around 66. North wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 86.
Tuesday Night
Mostly clear, with a low around 69.
Wednesday
Mostly sunny, with a high near 85.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 68.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 83.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 68.
Friday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 82.
Friday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 65.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 81.
Click Map For Forecast
Point Forecast:
Romeoville IL
 41.65°N 88.07°W
3:17 am CDT Jul 24, 2016
3am CDT Jul 24, 2016-6pm CDT Jul 30, 2016
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database