National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Heavy Rainfall and Severe Thunderstorm Threats for the Plains and Southeast

A frontal boundary extending from the western High Plains to the Southeast will focus additional showers and thunderstorms this weekend. Some of these storms may become severe, alongside frequent lightning, and isolated instances of flash flooding. Meanwhile dry conditions will continue for the Great Basin where fire weather concerns linger. For the mid-Atlantic and Northeast, seasonable weather. Read More >

Hazardous Weather Conditions

Current conditions at

Lewis University Airport (KLOT)

Lat: 41.6°NLon: 88.1°WElev: 669ft.

Fair with Haze

75°F

24°C

Humidity 61%
Wind Speed NE 13 mph
Barometer 30.37 in
Dewpoint 61°F (16°C)
Visibility 5.00 mi
Last update 1 Aug 11:50 am CDT
Extended Forecast for

Romeoville IL

  • This Afternoon

    This Afternoon: Widespread haze. Mostly sunny, with a high near 76. Northeast wind around 10 mph, with gusts as high as 15 mph.

    High: 76 °F

    Haze

  • Tonight

    Tonight: Widespread haze before 1am. Partly cloudy, with a low around 59. Northeast wind 5 to 10 mph.

    Low: 59 °F

    Haze

  • Saturday

    Saturday: Sunny, with a high near 80. East wind around 5 mph, with gusts as high as 15 mph.

    High: 80 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 58. East wind around 5 mph becoming calm in the evening. Winds could gust as high as 10 mph.

    Low: 58 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 81. Calm wind becoming east around 5 mph in the morning. Winds could gust as high as 15 mph.

    High: 81 °F

    Sunny

  • Sunday Night

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

    Low: 61 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 64.

    Low: 64 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Widespread haze. Mostly sunny, with a high near 76. Northeast wind around 10 mph, with gusts as high as 15 mph.
Tonight
Widespread haze before 1am. Partly cloudy, with a low around 59. Northeast wind 5 to 10 mph.
Saturday
Sunny, with a high near 80. East wind around 5 mph, with gusts as high as 15 mph.
Saturday Night
Mostly clear, with a low around 58. East wind around 5 mph becoming calm in the evening. Winds could gust as high as 10 mph.
Sunday
Sunny, with a high near 81. Calm wind becoming east around 5 mph in the morning. Winds could gust as high as 15 mph.
Sunday Night
Mostly clear, with a low around 61.
Monday
Mostly sunny, with a high near 84.
Monday Night
Partly cloudy, with a low around 64.
Tuesday
Mostly sunny, with a high near 84.
Tuesday Night
Partly cloudy, with a low around 66.
Wednesday
Sunny, with a high near 86.
Wednesday Night
Mostly clear, with a low around 66.
Thursday
Sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Romeoville IL
 41.63°N 88.1°W
Last Update:
8:56 am CDT Aug 1, 2025
Forecast Valid:
12pm CDT Aug 1, 2025-6pm CDT Aug 7, 2025
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation