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Chicago, IL Local Forecast Office

17NM ENE Chicago IL

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:S wind 15 to 20 kt. A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 3am.  Widespread dense fog, mainly between midnight and 2am.  Waves 2 to 4 ft.

      Low: 48 °F

      S 20kt
      2-4ft

    • Saturday

      Saturday:SSW wind 15 to 20 kt becoming W in the afternoon. Showers and thunderstorms likely before noon, then a slight chance of showers between noon and 1pm.  Patchy dense fog before 1pm.  Waves 2 to 3 ft.

      High: 51 °FFalling Temperatures

      SSW 20kt
      2-3ft

    • Saturday Night

      Saturday Night:WNW wind 10 to 15 kt becoming SW after midnight. Mostly cloudy, then gradually becoming mostly clear. Waves 1 to 2 ft.

      Low: 40 °F

      WNW 15kt
      1-2ft

    • Sunday

      Sunday:SW wind 15 to 20 kt. Sunny. Waves 2 to 3 ft.

      High: 53 °F

      SW 20kt
      2-3ft

    • Sunday Night

      Sunday Night:SSW wind 15 to 20 kt. Mostly clear. Waves 2 to 3 ft.

      Low: 46 °F

      SSW 20kt
      2-3ft

    • Monday

      Monday:SSW wind 10 to 20 kt. Sunny. Waves 1 to 3 ft.

      High: 57 °F

      SSW 20kt
      1-3ft

    • Monday Night

      Monday Night:SW wind 10 to 15 kt becoming NNE after midnight. Mostly clear. Waves 1 ft or less building to 3 ft.

      Low: 43 °F

      N 15kt
      Waves Building3ft

    • Tuesday

      Tuesday:NNE wind 10 to 15 kt. Rain likely and possibly a thunderstorm after noon.   Waves 3 to 4 ft.

      High: 51 °F

      NNE 15kt
      3-4ft

    • Tuesday Night

      Tuesday Night:N wind 15 to 25 kt. Rain and possibly a thunderstorm before midnight, then rain likely.   Waves 4 ft building to 9 ft.

      Low: 38 °F

      N 25kt
      Waves Building9ft


High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 8:32 pm CST Mar 6, 2026
Forecast Valid: 9pm CST Mar 6, 2026-6pm CDT Mar 13, 2026

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Detailed Forecast

Tonight
S wind 15 to 20 kt. A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 3am. Widespread dense fog, mainly between midnight and 2am. Waves 2 to 4 ft.
Saturday
SSW wind 15 to 20 kt becoming W in the afternoon. Showers and thunderstorms likely before noon, then a slight chance of showers between noon and 1pm. Patchy dense fog before 1pm. Waves 2 to 3 ft.
Saturday Night
WNW wind 10 to 15 kt becoming SW after midnight. Mostly cloudy, then gradually becoming mostly clear. Waves 1 to 2 ft.
Sunday
SW wind 15 to 20 kt. Sunny. Waves 2 to 3 ft.
Sunday Night
SSW wind 15 to 20 kt. Mostly clear. Waves 2 to 3 ft.
Monday
SSW wind 10 to 20 kt. Sunny. Waves 1 to 3 ft.
Monday Night
SW wind 10 to 15 kt becoming NNE after midnight. Mostly clear. Waves 1 ft or less building to 3 ft.
Tuesday
NNE wind 10 to 15 kt. Rain likely and possibly a thunderstorm after noon. Waves 3 to 4 ft.
Tuesday Night
N wind 15 to 25 kt. Rain and possibly a thunderstorm before midnight, then rain likely. Waves 4 ft building to 9 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: 8:32 pm CST Mar 6, 2026
Forecast Valid: 9pm CST Mar 6, 2026-6pm CDT Mar 13, 2026
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