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Hazardous Weather Conditions

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Light Rain Fog/Mist

41°F

5°C

Humidity 100%
Wind Speed SE 8 mph
Barometer 29.56 in (1001.5 mb)
Dewpoint 41°F (5°C)
Visibility 1.25 mi
Wind Chill36°F (2°C)
Last update 18 Feb 12:51 am CST
Extended Forecast for

Winthrop Harbor IL

Fire Weather Watch February 18, 09:00am until February 18, 08:00pm
Click here for hazard details and duration
Fire Weather Watch

  • Overnight

    Overnight: Showers and thunderstorms before 4am, then a chance of showers. Temperature rising to around 48 by 4am. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 44 °F⇑

    Showers

  • Wednesday

    Wednesday: A 20 percent chance of showers before 7am. Mostly cloudy through mid morning, then gradual clearing, with a high near 62. Breezy, with a west southwest wind 15 to 20 mph, with gusts as high as 35 mph.

    High: 62 °F

    Breezy.
    Slight Chance
    Showers then
    Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 37. West southwest wind 5 to 15 mph becoming south southeast after midnight. Winds could gust as high as 20 mph.

    Low: 37 °F

    Increasing
    Clouds

  • Thursday

    Thursday: A 40 percent chance of rain, mainly after noon. Partly sunny, with a high near 50. East southeast wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 50 °F

    Chance Rain

  • Thursday Night

    Thursday Night: Rain likely and possibly a thunderstorm. Mostly cloudy, with a low around 33. East wind 10 to 15 mph becoming west southwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 70%.

    Low: 33 °F

    Rain Likely

  • Friday

    Friday: A 30 percent chance of rain, mainly before noon. Mostly cloudy, with a high near 40. Breezy.

    High: 40 °F

    Chance Rain
    and Breezy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 26.

    Low: 26 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 37.

    High: 37 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 24.

    Low: 24 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Showers and thunderstorms before 4am, then a chance of showers. Temperature rising to around 48 by 4am. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
A 20 percent chance of showers before 7am. Mostly cloudy through mid morning, then gradual clearing, with a high near 62. Breezy, with a west southwest wind 15 to 20 mph, with gusts as high as 35 mph.
Wednesday Night
Increasing clouds, with a low around 37. West southwest wind 5 to 15 mph becoming south southeast after midnight. Winds could gust as high as 20 mph.
Thursday
A 40 percent chance of rain, mainly after noon. Partly sunny, with a high near 50. East southeast wind 5 to 10 mph, with gusts as high as 15 mph.
Thursday Night
Rain likely and possibly a thunderstorm. Mostly cloudy, with a low around 33. East wind 10 to 15 mph becoming west southwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 70%.
Friday
A 30 percent chance of rain, mainly before noon. Mostly cloudy, with a high near 40. Breezy.
Friday Night
Partly cloudy, with a low around 26.
Saturday
Partly sunny, with a high near 37.
Saturday Night
Mostly cloudy, with a low around 24.
Sunday
Partly sunny, with a high near 31.
Sunday Night
Partly cloudy, with a low around 18.
Monday
Mostly sunny, with a high near 29.
Monday Night
Partly cloudy, with a low around 20.
Tuesday
Mostly cloudy, with a high near 35.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Winthrop Harbor IL
 42.47°N 87.84°W
Last Update:
12:51 am CST Feb 18, 2026
Forecast Valid:
12am CST Feb 18, 2026-6pm CST Feb 24, 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