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Chicago, IL Local Forecast Office

17NM ENE Chicago IL

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:Variable winds 5 kt or less. Widespread dense fog, mainly after 11pm.  Waves 1 ft or less.

      Low: 44 °F

      Light Wind
      < 1ft

    • Friday

      Friday:SSE wind 5 to 15 kt, with gusts as high as 20 kt. Widespread dense fog before 10am.  Waves 1 to 2 ft.

      High: 63 °F

      SSE 15kt
      1-2ft

    • Friday Night

      Friday Night:S wind 15 to 20 kt becoming WSW after midnight. Showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then a chance of showers after 4am. Some of the storms could be severe.  Patchy fog between 1am and 3am.  Waves 2 to 3 ft.

      Low: 44 °F

      S 20kt
      2-3ft

    • Saturday

      Saturday:WNW wind 10 to 15 kt. A chance of showers, mainly before 7am.   Waves 2 to 3 ft.

      High: 47 °F

      WNW 15kt
      2-3ft

    • Saturday Night

      Saturday Night:WNW wind around 15 kt. Mostly clear. Waves around 2 ft.

      Low: 41 °F

      WNW 15kt
      2ft

    • Sunday

      Sunday:WNW wind 10 to 15 kt becoming N in the afternoon. Mostly sunny. Waves 1 to 2 ft.

      High: 46 °F

      WNW 15kt
      1-2ft

    • Sunday Night

      Sunday Night:N wind 5 to 10 kt. Partly cloudy. Waves around 1 ft.

      Low: 40 °F

      N 10kt
      1ft

    • Monday

      Monday:Variable winds 5 kt or less. Sunny. Waves around 1 ft.

      High: 52 °F

      Light Wind
      1ft

    • Monday Night

      Monday Night:SE wind 10 to 15 kt becoming S 15 to 20 kt after midnight. Partly cloudy. Waves 1 to 3 ft.

      Low: 46 °F

      ⇑S 20kt
      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: 8:11 pm CDT Apr 16, 2026
Forecast Valid: 8pm CDT Apr 16, 2026-6pm CDT Apr 23, 2026

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Detailed Forecast

Tonight
Variable winds 5 kt or less. Widespread dense fog, mainly after 11pm. Waves 1 ft or less.
Friday
SSE wind 5 to 15 kt, with gusts as high as 20 kt. Widespread dense fog before 10am. Waves 1 to 2 ft.
Friday Night
S wind 15 to 20 kt becoming WSW after midnight. Showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then a chance of showers after 4am. Some of the storms could be severe. Patchy fog between 1am and 3am. Waves 2 to 3 ft.
Saturday
WNW wind 10 to 15 kt. A chance of showers, mainly before 7am. Waves 2 to 3 ft.
Saturday Night
WNW wind around 15 kt. Mostly clear. Waves around 2 ft.
Sunday
WNW wind 10 to 15 kt becoming N in the afternoon. Mostly sunny. Waves 1 to 2 ft.
Sunday Night
N wind 5 to 10 kt. Partly cloudy. Waves around 1 ft.
Monday
Variable winds 5 kt or less. Sunny. Waves around 1 ft.
Monday Night
SE wind 10 to 15 kt becoming S 15 to 20 kt after midnight. Partly cloudy. 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: 41.91°N 87.32°W
Last Update: 8:11 pm CDT Apr 16, 2026
Forecast Valid: 8pm CDT Apr 16, 2026-6pm CDT Apr 23, 2026
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