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Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:N wind 25 to 30 kt, with gusts as high as 35 kt. Showers and possibly a thunderstorm before midnight, then a slight chance of showers between midnight and 1am.   Waves 5 ft building to 10 ft.

      Low: 33 °F

      N 30kt
      Waves Building10ft

      Gale Warning
      Gale Warning

    • Friday

      Friday:N wind 15 to 20 kt decreasing to 10 to 15 kt in the afternoon. Mostly cloudy, then gradually becoming sunny. Waves 8 ft subsiding to 3 ft.

      High: 38 °F

      N 20kt⇓
      8ftWaves Subsiding

    • Friday Night

      Friday Night:N wind 5 to 10 kt becoming WNW in the evening. Mostly clear. Waves 1 to 2 ft.

      Low: 31 °F

      NW 10kt
      1-2ft

    • Saturday

      Saturday:NW wind 5 to 10 kt becoming S in the afternoon. Sunny. Waves around 1 ft.

      High: 48 °F

      S 10kt
      1ft

    • Saturday Night

      Saturday Night:S wind around 10 kt, with gusts as high as 15 kt. Mostly cloudy. Waves around 1 ft.

      Low: 42 °F

      S 10kt
      1ft

    • Sunday

      Sunday:SSW wind around 10 kt. Partly sunny. Waves around 1 ft.

      High: 60 °F

      SSW 10kt
      1ft

    • Sunday Night

      Sunday Night:SSW wind around 10 kt. Mostly cloudy. Waves 1 ft or less.

      Low: 47 °F

      SSW 10kt
      < 1ft

    • Monday

      Monday:SSW wind around 10 kt becoming NNE in the afternoon. Mostly sunny. Waves 1 ft or less.

      High: 63 °F

      SSW 10kt
      < 1ft

    • Monday Night

      Monday Night:NNE wind 10 to 15 kt becoming SSW after midnight. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am.   Waves 1 ft building to 4 ft.

      Low: 50 °F

      E 15kt
      Waves Building4ft


High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 4:23 pm CDT Mar 26, 2026
Forecast Valid: 6pm CDT Mar 26, 2026-6pm CDT Apr 2, 2026

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Detailed Forecast

Tonight
N wind 25 to 30 kt, with gusts as high as 35 kt. Showers and possibly a thunderstorm before midnight, then a slight chance of showers between midnight and 1am. Waves 5 ft building to 10 ft.
Friday
N wind 15 to 20 kt decreasing to 10 to 15 kt in the afternoon. Mostly cloudy, then gradually becoming sunny. Waves 8 ft subsiding to 3 ft.
Friday Night
N wind 5 to 10 kt becoming WNW in the evening. Mostly clear. Waves 1 to 2 ft.
Saturday
NW wind 5 to 10 kt becoming S in the afternoon. Sunny. Waves around 1 ft.
Saturday Night
S wind around 10 kt, with gusts as high as 15 kt. Mostly cloudy. Waves around 1 ft.
Sunday
SSW wind around 10 kt. Partly sunny. Waves around 1 ft.
Sunday Night
SSW wind around 10 kt. Mostly cloudy. Waves 1 ft or less.
Monday
SSW wind around 10 kt becoming NNE in the afternoon. Mostly sunny. Waves 1 ft or less.
Monday Night
NNE wind 10 to 15 kt becoming SSW after midnight. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Waves 1 ft building to 4 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: 4:23 pm CDT Mar 26, 2026
Forecast Valid: 6pm CDT Mar 26, 2026-6pm CDT Apr 2, 2026
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