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

Lewis University Airport (KLOT)

Lat: 41.6°NLon: 88.1°WElev: 669ft.

Overcast

36°F

2°C

Humidity 56%
Wind Speed N 12 mph
Barometer 30.08 in
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill28°F (-2°C)
Last update 13 Mar 11:15 pm CDT
Extended Forecast for

Romeoville IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 30. Northwest wind 5 to 10 mph becoming light north after midnight.

    Low: 30 °F

    Mostly Cloudy

  • Saturday

    Saturday: A slight chance of snow, mixing with rain after 2pm, then gradually ending. Cloudy, with a high near 42. Light and variable wind becoming east southeast 5 to 10 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 20%.

    High: 42 °F

    Slight Chance
    Snow then
    Slight Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: A slight chance of rain and snow before 8pm, then a slight chance of snow between 8pm and 9pm, then a chance of rain after 9pm. Cloudy, with a low around 38. East wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.

    Low: 38 °F

    Slight Chance
    Rain/Snow
    then Chance
    Rain

  • Sunday

    Sunday: A chance of rain, then showers and possibly a thunderstorm after 1pm. High near 62. Breezy, with a south wind 15 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 80%.

    High: 62 °F

    Breezy.
    Chance Rain
    then Showers

  • Sunday Night

    Sunday Night: Rain before 1am, then snow, possibly mixed with rain between 1am and 4am, then snow after 4am. Patchy blowing snow after 4am. Low around 24. Windy, with a south wind 25 to 30 mph becoming west after midnight. Winds could gust as high as 45 mph. Chance of precipitation is 100%.

    Low: 24 °F

    Rain and
    Breezy then
    Rain/Snow and
    Patchy
    Blowing Snow

  • Monday

    Monday: Snow likely, mainly before 1pm. Areas of blowing snow. Cloudy, with a high near 25. Windy. Chance of precipitation is 70%.

    High: 25 °F

    Snow Likely
    and Areas
    Blowing Snow

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 10. Blustery.

    Low: 10 °F

    Mostly Cloudy
    and Blustery
    then Partly
    Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 25.

    High: 25 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A chance of snow showers. Mostly cloudy, with a low around 19.

    Low: 19 °F

    Chance Snow
    Showers

Detailed Forecast

Tonight
Mostly cloudy, with a low around 30. Northwest wind 5 to 10 mph becoming light north after midnight.
Saturday
A slight chance of snow, mixing with rain after 2pm, then gradually ending. Cloudy, with a high near 42. Light and variable wind becoming east southeast 5 to 10 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 20%.
Saturday Night
A slight chance of rain and snow before 8pm, then a slight chance of snow between 8pm and 9pm, then a chance of rain after 9pm. Cloudy, with a low around 38. East wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.
Sunday
A chance of rain, then showers and possibly a thunderstorm after 1pm. High near 62. Breezy, with a south wind 15 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 80%.
Sunday Night
Rain before 1am, then snow, possibly mixed with rain between 1am and 4am, then snow after 4am. Patchy blowing snow after 4am. Low around 24. Windy, with a south wind 25 to 30 mph becoming west after midnight. Winds could gust as high as 45 mph. Chance of precipitation is 100%.
Monday
Snow likely, mainly before 1pm. Areas of blowing snow. Cloudy, with a high near 25. Windy. Chance of precipitation is 70%.
Monday Night
Mostly cloudy, with a low around 10. Blustery.
Tuesday
Mostly sunny, with a high near 25.
Tuesday Night
A chance of snow showers. Mostly cloudy, with a low around 19.
Wednesday
Partly sunny, with a high near 45.
Wednesday Night
Mostly clear, with a low around 32.
Thursday
Mostly sunny, with a high near 54.
Thursday Night
Partly cloudy, with a low around 36.
Friday
Partly sunny, with a high near 53.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Romeoville IL
 41.66°N 88.1°W
Last Update:
9:41 pm CDT Mar 13, 2026
Forecast Valid:
11pm CDT Mar 13, 2026-6pm CDT Mar 20, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation