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

Thunderstorms and Widespread Rainfall Across the Southern Plains

Isolated severe thunderstorms and widespread showers may produce flash flooding across the Southern Plains through Thursday. Numerous instances of flash flooding are expected in south-central Texas, including portions of the Hill Country; and an additional area across eastern Oklahoma into the Ozarks on Thursday. Heavy rainfall and mountain snow will return to southern California on Thursday. Read More >

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Fog/Mist

42°F

6°C

Humidity 96%
Wind Speed SW 3 mph
Barometer 30.17 in (1022.2 mb)
Dewpoint 41°F (5°C)
Visibility 5.00 mi
Last update 19 Nov 9:51 pm CST
Extended Forecast for

Winthrop Harbor IL

  • Tonight

    Tonight: Patchy drizzle and fog. Cloudy, with a low around 42. Southwest wind around 5 mph.

    Low: 42 °F

    Patchy
    Drizzle and
    Patchy Fog

  • Thursday

    Thursday: Patchy fog before 9am. Otherwise, cloudy, with a high near 50. South southwest wind 5 to 10 mph.

    High: 50 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 42. Southwest wind around 5 mph becoming north northwest after midnight.

    Low: 42 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 50. North wind 5 to 10 mph.

    High: 50 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 36. North wind around 5 mph, with gusts as high as 10 mph.

    Low: 36 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 48.

    High: 48 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 39.

    Low: 39 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 54.

    High: 54 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 39.

    Low: 39 °F

    Partly Cloudy

Detailed Forecast

Tonight
Patchy drizzle and fog. Cloudy, with a low around 42. Southwest wind around 5 mph.
Thursday
Patchy fog before 9am. Otherwise, cloudy, with a high near 50. South southwest wind 5 to 10 mph.
Thursday Night
Mostly cloudy, with a low around 42. Southwest wind around 5 mph becoming north northwest after midnight.
Friday
Partly sunny, with a high near 50. North wind 5 to 10 mph.
Friday Night
Mostly cloudy, with a low around 36. North wind around 5 mph, with gusts as high as 10 mph.
Saturday
Mostly sunny, with a high near 48.
Saturday Night
Partly cloudy, with a low around 39.
Sunday
Sunny, with a high near 54.
Sunday Night
Partly cloudy, with a low around 39.
Monday
Mostly sunny, with a high near 52.
Monday Night
A chance of rain. Mostly cloudy, with a low around 42.
Tuesday
A chance of rain. Mostly cloudy, with a high near 49.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 35.
Wednesday
Mostly sunny, with a high near 42.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Winthrop Harbor IL
 42.47°N 87.81°W
Last Update:
8:26 pm CST Nov 19, 2025
Forecast Valid:
10pm CST Nov 19, 2025-6pm CST Nov 26, 2025
 
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