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

66°F

19°C

Humidity 78%
Wind Speed NE 13 mph
Barometer 30.09 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 14 Oct 1:45 pm CDT
Extended Forecast for

Lemont IL

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 64. Northeast wind around 10 mph, with gusts as high as 15 mph.

    High: 64 °F

    Mostly Cloudy

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 57. Northeast wind around 10 mph, with gusts as high as 15 mph.

    Low: 57 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Thursday

    Thursday: A chance of showers and thunderstorms before noon, then showers likely between noon and 1pm, then showers and possibly a thunderstorm after 1pm. High near 61. East wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 61 °F

    Chance
    Showers then
    Showers

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm before 2am, then a slight chance of showers between 2am and 4am. Low around 50. Breezy, with an east wind 10 to 15 mph becoming west northwest 15 to 20 mph after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 80%.

    Low: 50 °F

    Showers and
    Breezy

  • Friday

    Friday: Showers likely, mainly after 1pm. Mostly cloudy, with a high near 55. Breezy, with a northwest wind around 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.

    High: 55 °F

    Breezy.
    Chance
    Showers then
    Showers
    Likely

  • Friday Night

    Friday Night: Patchy frost after 5am. Otherwise, partly cloudy, with a low around 39. Breezy.

    Low: 39 °F

    Mostly Cloudy
    and Breezy
    then Patchy
    Frost

  • Saturday

    Saturday: Patchy frost before 7am. Otherwise, sunny, with a high near 58.

    High: 58 °F

    Patchy Frost
    then Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 39.

    Low: 39 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 65.

    High: 65 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 64. Northeast wind around 10 mph, with gusts as high as 15 mph.
Tonight
A 20 percent chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 57. Northeast wind around 10 mph, with gusts as high as 15 mph.
Thursday
A chance of showers and thunderstorms before noon, then showers likely between noon and 1pm, then showers and possibly a thunderstorm after 1pm. High near 61. East wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
Showers and possibly a thunderstorm before 2am, then a slight chance of showers between 2am and 4am. Low around 50. Breezy, with an east wind 10 to 15 mph becoming west northwest 15 to 20 mph after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 80%.
Friday
Showers likely, mainly after 1pm. Mostly cloudy, with a high near 55. Breezy, with a northwest wind around 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.
Friday Night
Patchy frost after 5am. Otherwise, partly cloudy, with a low around 39. Breezy.
Saturday
Patchy frost before 7am. Otherwise, sunny, with a high near 58.
Saturday Night
Clear, with a low around 39.
Sunday
Sunny, with a high near 65.
Sunday Night
Mostly clear, with a low around 43.
Monday
Mostly sunny, with a high near 68.
Monday Night
Partly cloudy, with a low around 46.
Tuesday
Sunny, with a high near 70.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lemont IL
 41.67°N 87.98°W
Last Update:
1:26 pm CDT Oct 14, 2026
Forecast Valid:
2pm CDT Oct 14, 2026-6pm CDT Oct 20, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation