Powerful Winter Storm from the Upper Midwest into the Northeast; Severe Thunderstorms in the Midwest and Ohio Valley

A rapidly-intensifying storm is expected to bring heavy snow, blizzard conditions, and icing from the Upper Midwest through the Great Lakes and Northeast. Scattered severe thunderstorms may produce severe/damaging wind gusts and a couple of tornadoes across parts of the Midwest and lower Ohio Valley through the evening. Arctic air will expand across the central and southern U.S.. Read More >

Current conditions at

De Kalb Taylor Municipal Airport (KDKB)

Lat: 41.93°NLon: 88.71°WElev: 909ft.

Light Snow

12°F

-11°C

Humidity 88%
Wind Speed NA
Barometer 29.74 in
Dewpoint 9°F (-13°C)
Visibility 1.25 mi
Last update 29 Dec 4:15 am CST
Extended Forecast for

Sycamore IL

Wind Advisory December 29, 04:22am until December 29, 12:00pm
Winter Weather Advisory December 29, 04:22am until December 29, 10:00am
Click here for hazard details and duration
Wind Advisory
Winter Weather Advisory
  •  
    Wind Advisory December 29, 04:22am until December 29, 12:00pm
    Winter Weather Advisory December 29, 04:22am until December 29, 10:00am

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Overnight

    Low: 14 °F

    Snow and
    Areas Blowing
    Snow

  • Monday

    Monday: Snow, mainly before 8am, then a chance of flurries after 9am.  Areas of blowing snow before 8am. High near 18. Wind chill values as low as -3. Windy, with a northwest wind 25 to 30 mph decreasing to 20 to 25 mph in the afternoon. Winds could gust as high as 45 mph.  Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    High: 18 °F

    Snow and
    Areas Blowing
    Snow

  • Monday Night

    Monday Night: Cloudy, then gradually becoming partly cloudy, with a low around 11. Wind chill values as low as -1. Blustery, with a northwest wind 10 to 20 mph, with gusts as high as 30 mph.

    Low: 11 °F

    Cloudy and
    Blustery then
    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 27. Wind chill values as low as -2. West wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 27 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 23. West northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 23 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 50 percent chance of snow after noon.  Cloudy, with a high near 30.

    High: 30 °F

    Cloudy then
    Chance Snow

  • Wednesday Night

    Wednesday Night: A 20 percent chance of snow before midnight.  Mostly cloudy, with a low around 7.

    Low: 7 °F

    Slight Chance
    Snow then
    Partly Cloudy

  • New Year's Day

    New Year's Day: Mostly sunny, with a high near 17.

    High: 17 °F

    Mostly Sunny

Detailed Forecast

Overnight
Snow. Areas of blowing snow. Low around 14. Wind chill values as low as -5. Windy, with a west wind around 30 mph, with gusts as high as 45 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of less than one inch possible.
Monday
Snow, mainly before 8am, then a chance of flurries after 9am. Areas of blowing snow before 8am. High near 18. Wind chill values as low as -3. Windy, with a northwest wind 25 to 30 mph decreasing to 20 to 25 mph in the afternoon. Winds could gust as high as 45 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Monday Night
Cloudy, then gradually becoming partly cloudy, with a low around 11. Wind chill values as low as -1. Blustery, with a northwest wind 10 to 20 mph, with gusts as high as 30 mph.
Tuesday
Partly sunny, with a high near 27. Wind chill values as low as -2. West wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly cloudy, with a low around 23. West northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday
A 50 percent chance of snow after noon. Cloudy, with a high near 30.
Wednesday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 7.
New Year's Day
Mostly sunny, with a high near 17.
Thursday Night
Mostly cloudy, with a low around 9.
Friday
Partly sunny, with a high near 23.
Friday Night
Mostly cloudy, with a low around 12.
Saturday
Partly sunny, with a high near 24.
Saturday Night
Mostly cloudy, with a low around 13.
Sunday
Partly sunny, with a high near 28.
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ABOUT THIS FORECAST

 
Point Forecast:
Sycamore IL
 41.98°N 88.67°W
3:41 am CST Dec 29, 2025
4am CST Dec 29, 2025-6pm CST Jan 4, 2026
 
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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