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National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
7-Day Forecast 41.65°N 88.07°W (Text-Only)
NWS Forecast for: Romeoville IL
Issued by: National Weather Service Chicago, IL
Last Update: 1:50 am CST Dec 5, 2025		Print

  • Overnight

    Overnight: Patchy freezing fog. Mostly clear early, then becoming mostly cloudy, with a low around 4. Wind chill values as low as -9. South southwest wind 5 to 10 mph.

    Low: 4 °F

    Patchy
    Freezing Fog


  • Friday

    Friday: Patchy freezing fog before 9am. Partly sunny, with a high near 26. Wind chill values as low as -7. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 26 °F

    Patchy
    Freezing Fog
    then Partly
    Sunny

  • Friday
    Night

    Friday Night: Patchy snow and freezing rain between 9pm and 3am. Mostly cloudy, with a temperature rising to around 30 by 1am. South southwest wind 10 to 15 mph becoming west after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 30%.

    Low: 24 °F⇑

    Patchy Wintry
    Mix


  • Saturday

    Saturday: Partly sunny, with a high near 26. West northwest wind 5 to 10 mph becoming light and variable in the afternoon.

    High: 26 °F

    Partly Sunny



  • Saturday
    Night

    Saturday Night: Snow likely, mainly after midnight. Cloudy, with a low around 18. Calm wind becoming northeast around 5 mph after midnight. Winds could gust as high as 10 mph. Chance of precipitation is 70%.

    Low: 18 °F

    Slight Chance
    Snow then
    Snow Likely

  • Sunday

    Sunday: Snow likely before noon. Partly sunny, with a high near 26. Chance of precipitation is 60%.

    High: 26 °F

    Snow Likely
    then Partly
    Sunny

  • Sunday
    Night

    Sunday Night: A 20 percent chance of snow showers before midnight. Mostly cloudy, with a low around 7.

    Low: 7 °F

    Slight Chance
    Snow Showers
    then Mostly
    Cloudy

  • Monday

    Monday: Partly sunny, with a high near 20.

    High: 20 °F

    Partly Sunny



  • Monday
    Night

    Monday Night: A chance of snow. Mostly cloudy, with a low around 13.

    Low: 13 °F

    Chance Snow





    • Overnight: Patchy freezing fog. Mostly clear early, then becoming mostly cloudy, with a low around 4. Wind chill values as low as -9. South southwest wind 5 to 10 mph.

    Friday: Patchy freezing fog before 9am. Partly sunny, with a high near 26. Wind chill values as low as -7. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Friday Night: Patchy snow and freezing rain between 9pm and 3am. Mostly cloudy, with a temperature rising to around 30 by 1am. South southwest wind 10 to 15 mph becoming west after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 30%.

    Saturday: Partly sunny, with a high near 26. West northwest wind 5 to 10 mph becoming light and variable in the afternoon.

    Saturday Night: Snow likely, mainly after midnight. Cloudy, with a low around 18. Calm wind becoming northeast around 5 mph after midnight. Winds could gust as high as 10 mph. Chance of precipitation is 70%.

    Sunday: Snow likely before noon. Partly sunny, with a high near 26. Chance of precipitation is 60%.

    Sunday Night: A 20 percent chance of snow showers before midnight. Mostly cloudy, with a low around 7.

    Monday: Partly sunny, with a high near 20.

    Monday Night: A chance of snow. Mostly cloudy, with a low around 13.

    Tuesday: Mostly cloudy, with a high near 34.

    Tuesday Night: Rain and snow likely. Cloudy, with a low around 29.

    Wednesday: A chance of rain and snow. Cloudy, with a high near 35.

    Wednesday Night: A chance of snow. Mostly cloudy, with a low around 14.

    Thursday: Partly sunny, with a high near 22.


    Romeoville IL
     41.65°N 88.07°W

    Visit your local NWS office at: https://www.weather.gov/lot