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.

Fair

59°F

15°C

Humidity 36%
Wind Speed W 8 mph
Barometer 29.88 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 15 Feb 3:45 pm CST
Extended Forecast for

4 Miles E Oswego IL

  • Tonight

    Tonight: Patchy fog after midnight. Otherwise, increasing clouds, with a low around 34. Calm wind becoming south southwest around 5 mph after midnight.

    Low: 34 °F

    Mostly Clear
    then Patchy
    Fog

  • Washington's Birthday

    Washington's Birthday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 63. West southwest wind 10 to 15 mph, with gusts as high as 30 mph.

    High: 63 °F

    Patchy Fog
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Patchy fog after midnight. Otherwise, increasing clouds, with a low around 39. Southwest wind 5 to 10 mph becoming southeast after midnight.

    Low: 39 °F

    Partly Cloudy
    then Patchy
    Fog

  • Tuesday

    Tuesday: Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 58. Southeast wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 58 °F

    Patchy Fog
    then Cloudy

  • Tuesday Night

    Tuesday Night: Showers likely, with thunderstorms also possible after 3am. Mostly cloudy, with a low around 51. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.

    Low: 51 °F

    Chance
    Showers then
    Showers
    Likely and
    Breezy

  • Wednesday

    Wednesday: A 20 percent chance of showers before noon. Sunny, with a high near 66. Breezy.

    High: 66 °F

    Breezy.
    Slight Chance
    Showers then
    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 38.

    Low: 38 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of rain after noon. Partly sunny, with a high near 59.

    High: 59 °F

    Partly Sunny
    then Chance
    Rain

  • Thursday Night

    Thursday Night: A chance of rain. Partly cloudy, with a low around 34.

    Low: 34 °F

    Chance Rain

Detailed Forecast

Tonight
Patchy fog after midnight. Otherwise, increasing clouds, with a low around 34. Calm wind becoming south southwest around 5 mph after midnight.
Washington's Birthday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 63. West southwest wind 10 to 15 mph, with gusts as high as 30 mph.
Monday Night
Patchy fog after midnight. Otherwise, increasing clouds, with a low around 39. Southwest wind 5 to 10 mph becoming southeast after midnight.
Tuesday
Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 58. Southeast wind 5 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
Showers likely, with thunderstorms also possible after 3am. Mostly cloudy, with a low around 51. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.
Wednesday
A 20 percent chance of showers before noon. Sunny, with a high near 66. Breezy.
Wednesday Night
Partly cloudy, with a low around 38.
Thursday
A chance of rain after noon. Partly sunny, with a high near 59.
Thursday Night
A chance of rain. Partly cloudy, with a low around 34.
Friday
Mostly sunny, with a high near 46.
Friday Night
Partly cloudy, with a low around 26.
Saturday
Mostly sunny, with a high near 41.
Saturday Night
Partly cloudy, with a low around 23.
Sunday
Mostly sunny, with a high near 38.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles E Oswego IL
 41.71°N 88.27°W
Last Update:
3:11 pm CST Feb 15, 2026
Forecast Valid:
4pm CST Feb 15, 2026-6pm CST Feb 22, 2026
 
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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