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

Hazardous Weather Conditions

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Overcast

33°F

1°C

Humidity 82%
Wind Speed E 10 mph
Barometer 30.11 in (1020.8 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill25°F (-4°C)
Last update 3 Mar 5:51 am CST
Extended Forecast for

Winthrop Harbor IL

  • Today

    Today: Patchy drizzle before 9am. Mostly cloudy, with a high near 40. Southeast wind around 5 mph becoming northeast in the afternoon.

    High: 40 °F

    Patchy
    Drizzle then
    Mostly Cloudy

  • Tonight

    Tonight: Partly cloudy, with a low around 32. Northeast wind around 5 mph becoming northwest in the evening.

    Low: 32 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of rain after noon. Partly sunny, with a high near 44. East wind around 5 mph.

    High: 44 °F

    Mostly Sunny
    then Slight
    Chance Rain

  • Wednesday Night

    Wednesday Night: A 50 percent chance of rain, mainly after midnight. Mostly cloudy, with a low around 38. Northeast wind around 5 mph.

    Low: 38 °F

    Slight Chance
    Rain then
    Chance Rain

  • Thursday

    Thursday: Rain likely. Cloudy, with a high near 46. Northeast wind 5 to 10 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    High: 46 °F

    Rain Likely

  • Thursday Night

    Thursday Night: A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 39. Northeast wind around 5 mph becoming southeast after midnight.

    Low: 39 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Friday

    Friday: Rain. High near 60. Southeast wind 5 to 10 mph becoming south in the afternoon. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 60 °F

    Rain Likely
    then Rain

  • Friday Night

    Friday Night: Rain and possibly a thunderstorm. Low around 48. Southwest wind 10 to 15 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 48 °F

    Rain

  • Saturday

    Saturday: A 30 percent chance of rain before noon. Cloudy, then gradually becoming mostly sunny, with a high near 58.

    High: 58 °F

    Chance Rain
    then Mostly
    Sunny

Detailed Forecast

Today
Patchy drizzle before 9am. Mostly cloudy, with a high near 40. Southeast wind around 5 mph becoming northeast in the afternoon.
Tonight
Partly cloudy, with a low around 32. Northeast wind around 5 mph becoming northwest in the evening.
Wednesday
A 20 percent chance of rain after noon. Partly sunny, with a high near 44. East wind around 5 mph.
Wednesday Night
A 50 percent chance of rain, mainly after midnight. Mostly cloudy, with a low around 38. Northeast wind around 5 mph.
Thursday
Rain likely. Cloudy, with a high near 46. Northeast wind 5 to 10 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 39. Northeast wind around 5 mph becoming southeast after midnight.
Friday
Rain. High near 60. Southeast wind 5 to 10 mph becoming south in the afternoon. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
Rain and possibly a thunderstorm. Low around 48. Southwest wind 10 to 15 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
A 30 percent chance of rain before noon. Cloudy, then gradually becoming mostly sunny, with a high near 58.
Saturday Night
Mostly clear, with a low around 37.
Sunday
Sunny, with a high near 56.
Sunday Night
Partly cloudy, with a low around 42.
Monday
Mostly sunny, with a high near 56.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Winthrop Harbor IL
 42.49°N 87.81°W (Elev. 600 ft)
Last Update:
5:36 am CST Mar 3, 2026
Forecast Valid:
6am CST Mar 3, 2026-6pm CDT Mar 9, 2026
 
Forecast Discussion
 
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Additional Resources

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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