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

De Kalb Taylor Municipal Airport (KDKB)

Lat: 41.93°NLon: 88.71°WElev: 909ft.

Fair

53°F

12°C

Humidity 80%
Wind Speed Calm
Barometer 30.03 in
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 15 Jun 12:35 am CDT
Extended Forecast for

Marengo IL

  • Overnight

    Overnight: Mostly clear, with a low around 49. Calm wind becoming southwest around 5 mph.

    Low: 49 °F

    Mostly Clear

  • Monday

    Monday: Increasing clouds, with a high near 74. West wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 74 °F

    Increasing
    Clouds

  • Monday Night

    Monday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 56. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 56 °F

    Decreasing
    Clouds

  • Tuesday

    Tuesday: Showers and thunderstorms likely, mainly between 3pm and 5pm. Mostly sunny, with a high near 74. South southwest wind 10 to 15 mph becoming west in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 60%.

    High: 74 °F

    T-storms
    Likely

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 51. West wind 5 to 10 mph becoming light west southwest in the evening. Winds could gust as high as 20 mph.

    Low: 51 °F

    Chance
    Showers then
    Partly Cloudy

  • Wednesday

    Wednesday: A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers and possibly a thunderstorm after 1pm. Some of the storms could produce heavy rainfall. High near 73. Breezy. Chance of precipitation is 90%.

    High: 73 °F

    Chance
    Showers then
    Heavy Rain
    and Breezy

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm before 1am, then a slight chance of showers. Low around 58. Chance of precipitation is 80%.

    Low: 58 °F

    T-storms then
    Showers

  • Thursday

    Thursday: Partly sunny, with a high near 73. Breezy.

    High: 73 °F

    Partly Sunny
    and Breezy

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 49. Calm wind becoming southwest around 5 mph.
Monday
Increasing clouds, with a high near 74. West wind 5 to 10 mph, with gusts as high as 20 mph.
Monday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 56. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.
Tuesday
Showers and thunderstorms likely, mainly between 3pm and 5pm. Mostly sunny, with a high near 74. South southwest wind 10 to 15 mph becoming west in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 60%.
Tuesday Night
A 30 percent chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 51. West wind 5 to 10 mph becoming light west southwest in the evening. Winds could gust as high as 20 mph.
Wednesday
A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers and possibly a thunderstorm after 1pm. Some of the storms could produce heavy rainfall. High near 73. Breezy. Chance of precipitation is 90%.
Wednesday Night
Showers and possibly a thunderstorm before 1am, then a slight chance of showers. Low around 58. Chance of precipitation is 80%.
Thursday
Partly sunny, with a high near 73. Breezy.
Thursday Night
Mostly clear, with a low around 53.
Juneteenth
Sunny, with a high near 76.
Friday Night
Mostly clear, with a low around 55.
Saturday
Mostly sunny, with a high near 78.
Saturday Night
A chance of showers. Partly cloudy, with a low around 58.
Sunday
A chance of showers. Partly sunny, with a high near 77.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Marengo IL
 42.24°N 88.62°W
Last Update:
12:36 am CDT Jun 15, 2026
Forecast Valid:
12am CDT Jun 15, 2026-6pm CDT Jun 21, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation