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

Hazardous Weather Conditions

Current conditions at

De Kalb Taylor Municipal Airport (KDKB)

Lat: 41.93°NLon: 88.71°WElev: 909ft.

Fair

73°F

23°C

Humidity 99%
Wind Speed SE 3 mph
Barometer 29.89 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 11 Aug 8:15 pm CDT
Extended Forecast for

Union IL

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly between 1am and 5am. Areas of fog after 1am. Otherwise, mostly cloudy, with a low around 67. Calm wind.

    Low: 67 °F

    Chance
    T-storms and
    Areas Fog

  • Wednesday

    Wednesday: Showers and thunderstorms likely, mainly before 1pm. Areas of fog before 9am. Otherwise, partly sunny, with a high near 82. Calm wind becoming southeast around 5 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 82 °F

    Showers
    Likely and
    Areas Fog

  • Wednesday Night

    Wednesday Night: A slight chance of showers before 7pm, then a chance of showers after 1am. Increasing clouds, with a low around 66. Southeast wind around 5 mph becoming calm. Chance of precipitation is 50%.

    Low: 66 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Thursday

    Thursday: Showers likely, with thunderstorms also possible after 10am. Mostly cloudy, with a high near 79. Calm wind becoming east southeast around 5 mph in the morning. Chance of precipitation is 70%.

    High: 79 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 63. Northeast wind around 5 mph, with gusts as high as 15 mph.

    Low: 63 °F

    Chance
    Showers

  • Friday

    Friday: A 20 percent chance of showers before 1pm. Partly sunny, with a high near 78.

    High: 78 °F

    Slight Chance
    Showers

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 63. Chance of precipitation is 60%.

    Low: 63 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm before 1pm. Mostly cloudy, with a high near 81.

    High: 81 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 68.

    Low: 68 °F

    Chance
    T-storms

Detailed Forecast

Tonight
A 30 percent chance of showers and thunderstorms, mainly between 1am and 5am. Areas of fog after 1am. Otherwise, mostly cloudy, with a low around 67. Calm wind.
Wednesday
Showers and thunderstorms likely, mainly before 1pm. Areas of fog before 9am. Otherwise, partly sunny, with a high near 82. Calm wind becoming southeast around 5 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A slight chance of showers before 7pm, then a chance of showers after 1am. Increasing clouds, with a low around 66. Southeast wind around 5 mph becoming calm. Chance of precipitation is 50%.
Thursday
Showers likely, with thunderstorms also possible after 10am. Mostly cloudy, with a high near 79. Calm wind becoming east southeast around 5 mph in the morning. Chance of precipitation is 70%.
Thursday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 63. Northeast wind around 5 mph, with gusts as high as 15 mph.
Friday
A 20 percent chance of showers before 1pm. Partly sunny, with a high near 78.
Friday Night
A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 63. Chance of precipitation is 60%.
Saturday
Showers likely and possibly a thunderstorm before 1pm. Mostly cloudy, with a high near 81.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 68.
Sunday
A chance of showers before 1pm. Partly sunny, with a high near 81.
Sunday Night
Partly cloudy, with a low around 63.
Monday
Mostly sunny, with a high near 78.
Monday Night
Partly cloudy, with a low around 60.
Tuesday
Mostly sunny, with a high near 79.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Union IL
 42.24°N 88.53°W
Last Update:
6:31 pm CDT Aug 11, 2026
Forecast Valid:
8pm CDT Aug 11, 2026-6pm CDT Aug 18, 2026
 
Forecast Discussion
 
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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