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Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:NW wind 20 to 25 kt, with gusts as high as 30 kt. Scattered snow showers, mainly before 1am.  Widespread freezing spray before 1am.  Waves 4 to 6 ft. occasionally to 8ft.

      Low: 17 °F

      NW 25kt
      4-6ft

      Gale Warning
      Gale Warning

    • Tuesday

      Tuesday:WNW wind 10 to 20 kt. Partly sunny. Waves 1 to 3 ft.

      High: 26 °F

      WNW 20kt
      1-3ft

      Small Craft Advisory
      Small Craft Advisory

    • Tuesday Night

      Tuesday Night:SW wind 10 to 15 kt becoming S after midnight. Snow, mainly after 10pm.   Waves around 1 ft.

      Low: 22 °F

      S 15kt
      1ft

    • Wednesday

      Wednesday:S wind 10 to 15 kt. A slight chance of snow before 10am.   Waves 1 to 2 ft.

      High: 42 °F

      S 15kt
      1-2ft

    • Wednesday Night

      Wednesday Night:Variable winds 5 kt or less. Mostly cloudy. Waves 1 ft or less.

      Low: 35 °F

      Light Wind
      < 1ft

    • Thursday

      Thursday:Variable winds 5 kt or less. Mostly sunny. Waves 1 ft or less.

      High: 49 °F

      Light Wind
      < 1ft

    • Thursday Night

      Thursday Night:Variable winds 5 kt or less. Mostly cloudy. Waves 1 ft or less.

      Low: 39 °F

      Light Wind
      < 1ft

    • Friday

      Friday:SW wind 5 to 10 kt. Partly sunny. Waves 1 ft or less.

      High: 54 °F

      SW 10kt
      < 1ft

    • Friday Night

      Friday Night:WNW wind 10 to 15 kt becoming SSE after midnight. Mostly cloudy. Waves 1 ft or less building to 3 ft.

      Low: 40 °F

      NW 15kt
      Waves Building3ft


High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 9:01 pm CDT Mar 16, 2026
Forecast Valid: 9pm CDT Mar 16, 2026-6pm CDT Mar 23, 2026

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Detailed Forecast

Tonight
NW wind 20 to 25 kt, with gusts as high as 30 kt. Scattered snow showers, mainly before 1am. Widespread freezing spray before 1am. Waves 4 to 6 ft. occasionally to 8ft.
Tuesday
WNW wind 10 to 20 kt. Partly sunny. Waves 1 to 3 ft.
Tuesday Night
SW wind 10 to 15 kt becoming S after midnight. Snow, mainly after 10pm. Waves around 1 ft.
Wednesday
S wind 10 to 15 kt. A slight chance of snow before 10am. Waves 1 to 2 ft.
Wednesday Night
Variable winds 5 kt or less. Mostly cloudy. Waves 1 ft or less.
Thursday
Variable winds 5 kt or less. Mostly sunny. Waves 1 ft or less.
Thursday Night
Variable winds 5 kt or less. Mostly cloudy. Waves 1 ft or less.
Friday
SW wind 5 to 10 kt. Partly sunny. Waves 1 ft or less.
Friday Night
WNW wind 10 to 15 kt becoming SSE after midnight. Mostly cloudy. Waves 1 ft or less building 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: 9:01 pm CDT Mar 16, 2026
Forecast Valid: 9pm CDT Mar 16, 2026-6pm CDT Mar 23, 2026
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