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Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:S wind 5 to 10 kt becoming NNE after midnight. Snow, mainly after midnight. The snow could be heavy at times.   Waves 1 ft or less.

      Low: 28 °F

      SE 10kt
      < 1ft

    • Sunday

      Sunday:N wind 10 to 20 kt. Snow likely, mainly before noon.   Waves 1 ft building to 5 ft.

      High: 32 °FFalling Temperatures

      N 20kt
      Waves Building5ft

      Small Craft Advisory
      Small Craft Advisory

    • Sunday Night

      Sunday Night:N wind 10 to 15 kt becoming E after midnight. A chance of snow, mainly before midnight.   Waves 3 to 5 ft.

      Low: 20 °F

      N 15kt
      3-5ft

      Small Craft Advisory
      Small Craft Advisory

    • Monday

      Monday:ESE wind around 10 kt becoming S in the afternoon. Partly sunny. Waves 1 to 3 ft.

      High: 25 °F

      S 10kt
      1-3ft

      Small Craft Advisory
      Small Craft Advisory

    • Monday Night

      Monday Night:S wind 10 to 20 kt. A chance of snow after midnight.   Waves 1 to 2 ft.

      Low: 20 °F

      S 20kt
      1-2ft

    • Tuesday

      Tuesday:SW wind 15 to 20 kt. A slight chance of rain after noon.   Waves 1 to 2 ft.

      High: 40 °F

      SW 20kt
      1-2ft

    • Tuesday Night

      Tuesday Night:SSW wind 15 to 20 kt becoming WSW after midnight. Winds could gust as high as 25 kt. Rain.   Waves 1 to 2 ft.

      Low: 37 °F

      SW 20kt
      1-2ft

    • Wednesday

      Wednesday:WNW wind 15 to 20 kt, with gusts as high as 25 kt. A chance of rain and snow before noon.   Waves around 2 ft.

      High: 39 °F

      WNW 20kt
      2ft

    • Wednesday Night

      Wednesday Night:WNW wind 10 to 15 kt. A chance of snow.   Waves 1 to 3 ft.

      Low: 23 °F

      WNW 15kt
      1-3ft


High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 3:11 pm CST Dec 6, 2025
Forecast Valid: 7pm CST Dec 6, 2025-6pm CST Dec 13, 2025

View Nearby Observations

Detailed Forecast

Tonight
S wind 5 to 10 kt becoming NNE after midnight. Snow, mainly after midnight. The snow could be heavy at times. Waves 1 ft or less.
Sunday
N wind 10 to 20 kt. Snow likely, mainly before noon. Waves 1 ft building to 5 ft.
Sunday Night
N wind 10 to 15 kt becoming E after midnight. A chance of snow, mainly before midnight. Waves 3 to 5 ft.
Monday
ESE wind around 10 kt becoming S in the afternoon. Partly sunny. Waves 1 to 3 ft.
Monday Night
S wind 10 to 20 kt. A chance of snow after midnight. Waves 1 to 2 ft.
Tuesday
SW wind 15 to 20 kt. A slight chance of rain after noon. Waves 1 to 2 ft.
Tuesday Night
SSW wind 15 to 20 kt becoming WSW after midnight. Winds could gust as high as 25 kt. Rain. Waves 1 to 2 ft.
Wednesday
WNW wind 15 to 20 kt, with gusts as high as 25 kt. A chance of rain and snow before noon. Waves around 2 ft.
Wednesday Night
WNW wind 10 to 15 kt. A chance of snow. Waves 1 to 3 ft.

*Notices:

  1. This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
  2. The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.
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ABOUT THIS FORECAST

Point Forecast: 41.85°N 87.59°W
Last Update: 3:11 pm CST Dec 6, 2025
Forecast Valid: 7pm CST Dec 6, 2025-6pm CST Dec 13, 2025
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