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Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]
    • Thursday

      Thursday:W wind around 10 kt becoming SW in the afternoon. Winds could gust as high as 15 kt. Increasing clouds. Waves around 1 ft.

      High: 46 °F

      W 10kt
      1ft

    • Thursday Night

      Thursday Night:S wind 10 to 15 kt becoming SW 20 to 25 kt after midnight. Winds could gust as high as 45 kt. Showers likely, mainly before 3am.   Waves 1 ft building to 4 ft.

      Low: 37 °F

      ⇑SW 25kt
      Waves Building4ft

      Gale Warning
      Gale Warning

    • Friday

      Friday:W wind 25 to 30 kt, with gusts as high as 50 kt. Partly sunny. Waves 3 to 4 ft.

      High: 46 °F

      W 30kt
      3-4ft

      Gale Warning
      Gale Warning

    • Friday Night

      Friday Night:WNW wind 5 to 15 kt becoming NNW after midnight. Winds could gust as high as 30 kt. Mostly cloudy. Waves 1 to 2 ft.

      Low: 33 °F

      WNW 15kt
      1-2ft

      Gale Warning
      Gale Warning

    • Saturday

      Saturday:N wind 5 to 10 kt becoming ESE in the afternoon. A slight chance of snow showers after 1pm.   Waves around 1 ft.

      High: 41 °F

      E 10kt
      1ft

    • Saturday Night

      Saturday Night:E wind 10 to 20 kt. Rain and snow showers likely, becoming all rain after 4am.   Waves 1 ft building to 4 ft.

      Low: 36 °F

      E 20kt
      Waves Building4ft

    • Sunday

      Sunday:ESE wind around 20 kt becoming SSW in the afternoon. Winds could gust as high as 30 kt. Showers, with thunderstorms also possible after 1pm.   Waves 5 ft subsiding to 2 ft.

      High: 52 °F

      ESE 20kt
      5ftWaves Subsiding

    • Sunday Night

      Sunday Night:NW wind 20 to 30 kt. Rain and snow showers, becoming all snow after 1am.   Waves 3 ft building to 9 ft.

      Low: 22 °F

      NW 30kt
      Waves Building9ft

    • Monday

      Monday:WNW wind 20 to 25 kt, with gusts as high as 35 kt. A chance of snow.   Waves 9 ft subsiding to 5 ft.

      High: 27 °F

      WNW 25kt
      9ftWaves Subsiding


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 am CDT Mar 12, 2026
Forecast Valid: 4am CDT Mar 12, 2026-6pm CDT Mar 18, 2026

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Detailed Forecast

Thursday
W wind around 10 kt becoming SW in the afternoon. Winds could gust as high as 15 kt. Increasing clouds. Waves around 1 ft.
Thursday Night
S wind 10 to 15 kt becoming SW 20 to 25 kt after midnight. Winds could gust as high as 45 kt. Showers likely, mainly before 3am. Waves 1 ft building to 4 ft.
Friday
W wind 25 to 30 kt, with gusts as high as 50 kt. Partly sunny. Waves 3 to 4 ft.
Friday Night
WNW wind 5 to 15 kt becoming NNW after midnight. Winds could gust as high as 30 kt. Mostly cloudy. Waves 1 to 2 ft.
Saturday
N wind 5 to 10 kt becoming ESE in the afternoon. A slight chance of snow showers after 1pm. Waves around 1 ft.
Saturday Night
E wind 10 to 20 kt. Rain and snow showers likely, becoming all rain after 4am. Waves 1 ft building to 4 ft.
Sunday
ESE wind around 20 kt becoming SSW in the afternoon. Winds could gust as high as 30 kt. Showers, with thunderstorms also possible after 1pm. Waves 5 ft subsiding to 2 ft.
Sunday Night
NW wind 20 to 30 kt. Rain and snow showers, becoming all snow after 1am. Waves 3 ft building to 9 ft.
Monday
WNW wind 20 to 25 kt, with gusts as high as 35 kt. A chance of snow. Waves 9 ft subsiding to 5 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 am CDT Mar 12, 2026
Forecast Valid: 4am CDT Mar 12, 2026-6pm CDT Mar 18, 2026
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