Significant and Catastrophic Flooding in the Pacific Northwest; Very Cold Temperatures in the Northern Plains

The atmospheric river over the Pacific Northwest will begin to subside today, but lingering rainfall will exacerbate ongoing catastrophic major river flooding, and landslides will continue across portions of western Washington and northwest Oregon for several days. Arctic air will plummet southward into the Northern Plains today, bringing cold air in the single digits to the region by Friday. Read More >

Hazardous Weather Conditions

Current conditions at

Lewis University Airport (KLOT)

Lat: 41.6°NLon: 88.1°WElev: 669ft.

Overcast

27°F

-3°C

Humidity 74%
Wind Speed W 3 mph
Barometer 30.00 in
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Last update 11 Dec 4:45 pm CST
Extended Forecast for

2 Miles NW Chicago/Romeoville, Lewis University Airport IL

  • Tonight

    Tonight: A slight chance of flurries between 7pm and 3am.  Cloudy, with a low around 22. Calm wind becoming east around 5 mph in the evening.

    Low: 22 °F

    Slight Chance
    Flurries

  • Friday

    Friday: A slight chance of snow between 9am and 3pm, then a slight chance of flurries after 3pm.  Mostly cloudy, with a high near 29. Northeast wind 5 to 10 mph becoming west in the afternoon.  Chance of precipitation is 20%.

    High: 29 °F

    Slight Chance
    Snow

  • Friday Night

    Friday Night: A 20 percent chance of snow showers before midnight.  Mostly cloudy, with a low around 7. Wind chill values as low as -8. West northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 7 °F

    Slight Chance
    Snow Showers
    then Mostly
    Cloudy

  • Saturday

    Saturday: A 50 percent chance of snow.  Cloudy, with a high near 11. Wind chill values as low as -9. West northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 11 °F

    Chance Snow

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around -5. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: -5 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny and cold, with a high near 7.

    High: 7 °F

    Cold

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around -3.

    Low: -3 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 22.

    High: 22 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 15.

    Low: 15 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A slight chance of flurries between 7pm and 3am. Cloudy, with a low around 22. Calm wind becoming east around 5 mph in the evening.
Friday
A slight chance of snow between 9am and 3pm, then a slight chance of flurries after 3pm. Mostly cloudy, with a high near 29. Northeast wind 5 to 10 mph becoming west in the afternoon. Chance of precipitation is 20%.
Friday Night
A 20 percent chance of snow showers before midnight. Mostly cloudy, with a low around 7. Wind chill values as low as -8. West northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Saturday
A 50 percent chance of snow. Cloudy, with a high near 11. Wind chill values as low as -9. West northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Saturday Night
Partly cloudy, with a low around -5. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Sunday
Sunny and cold, with a high near 7.
Sunday Night
Partly cloudy, with a low around -3.
Monday
Partly sunny, with a high near 22.
Monday Night
Mostly cloudy, with a low around 15.
Tuesday
Partly sunny, with a high near 35.
Tuesday Night
Mostly cloudy, with a low around 30.
Wednesday
Mostly cloudy, with a high near 42.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 32.
Thursday
A chance of rain. Partly sunny, with a high near 41.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NW Chicago/Romeoville, Lewis University Airport IL
 41.63°N 88.13°W
4:00 pm CST Dec 11, 2025
5pm CST Dec 11, 2025-6pm CST Dec 18, 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