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

Risks of Severe Thunderstorms and Excessive Rainfall; Fire Weather Concerns and Record Warmth

Severe thunderstorms and flash flooding risks increase across the center of the nation today. Meanwhile, ongoing thunderstorms and flash flooding will linger along the Gulf Coast states through the evening. The Great Basin and Intermountain West, warm temperatures and dry fuels with dry lightning may enhance fire weather potential. In addition, across interior Alaska, Red Flag Warning are posted. Read More >

Current conditions at

De Kalb Taylor Municipal Airport (KDKB)

Lat: 41.93°NLon: 88.71°WElev: 909ft.

Partly Cloudy

74°F

23°C

Humidity 49%
Wind Speed NW 12 G 16 mph
Barometer 29.97 in
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 20 Jun 3:55 pm CDT
Extended Forecast for

Marengo IL

  • Tonight

    Tonight: Partly cloudy, with a low around 55. North northwest wind 5 to 10 mph becoming light and variable in the evening. Winds could gust as high as 15 mph.

    Low: 55 °F

    Partly Cloudy

  • Sunday

    Sunday: Showers, mainly after 1pm. High near 72. East wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 72 °F

    Slight Chance
    Showers then
    Showers

  • Sunday Night

    Sunday Night: Showers, mainly before midnight. Low around 55. North northeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 55 °F

    Showers then
    Chance
    Showers

  • Monday

    Monday: Mostly cloudy, then gradually becoming sunny, with a high near 74. North northeast wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 74 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Mostly clear, with a low around 51. North northeast wind 5 to 10 mph.

    Low: 51 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 56.

    Low: 56 °F

    Partly Cloudy
    then Chance
    T-storms

  • Wednesday

    Wednesday: Showers likely, with thunderstorms also possible after 1pm. Partly sunny, with a high near 76.

    High: 76 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 55.

    Low: 55 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 55. North northwest wind 5 to 10 mph becoming light and variable in the evening. Winds could gust as high as 15 mph.
Sunday
Showers, mainly after 1pm. High near 72. East wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
Showers, mainly before midnight. Low around 55. North northeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 74. North northeast wind 10 to 15 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 51. North northeast wind 5 to 10 mph.
Tuesday
Mostly sunny, with a high near 76.
Tuesday Night
A 50 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 56.
Wednesday
Showers likely, with thunderstorms also possible after 1pm. Partly sunny, with a high near 76.
Wednesday Night
Partly cloudy, with a low around 55.
Thursday
A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 76.
Thursday Night
Partly cloudy, with a low around 55.
Friday
Mostly sunny, with a high near 79.
Friday Night
Partly cloudy, with a low around 58.
Saturday
A chance of showers. Partly sunny, with a high near 80.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Marengo IL
 42.26°N 88.62°W
Last Update:
2:52 pm CDT Jun 20, 2026
Forecast Valid:
4pm CDT Jun 20, 2026-6pm CDT Jun 27, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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