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Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

    • Tonight

      Tonight:Variable winds 5 kt or less. Mostly clear. Waves 1 ft or less.

      Low: 66 °F

      Light Wind
      < 1ft

    • Friday

      Friday:SSW wind 5 to 10 kt becoming SSE in the afternoon. Partly sunny. Waves 1 ft or less.

      High: 80 °F

      SSE 10kt
      < 1ft

    • Friday Night

      Friday Night:SW wind 5 to 10 kt. A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 3am. Waves 1 ft or less.

      Low: 67 °F

      SW 10kt
      < 1ft

    • Saturday

      Saturday:WNW wind around 10 kt becoming N in the afternoon. Winds could gust as high as 15 kt. Mostly cloudy, then gradually becoming sunny. Waves 1 ft or less.

      High: 77 °F

      NNW 10kt
      < 1ft

    • Saturday Night

      Saturday Night:NNW wind around 10 kt. Mostly clear. Waves 1 to 2 ft.

      Low: 65 °F

      NNW 10kt
      1-2ft

    • Sunday

      Sunday:N wind around 10 kt. Sunny. Waves around 2 ft.

      High: 72 °F

      N 10kt
      2ft

    • Sunday Night

      Sunday Night:Variable winds 5 kt or less. Partly cloudy. Waves around 1 ft.

      Low: 63 °F

      Light Wind
      1ft

    • Monday

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

      High: 74 °F

      Light Wind
      1ft

    • Monday Night

      Monday Night:Variable winds 5 kt or less. Partly cloudy. Waves 1 ft or less.

      Low: 64 °F

      Light Wind
      < 1ft


High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 8:41 pm CDT Aug 20, 2026
Forecast Valid: 10pm CDT Aug 20, 2026-6pm CDT Aug 27, 2026

View Nearby Observations

Detailed Forecast

Tonight
Variable winds 5 kt or less. Mostly clear. Waves 1 ft or less.
Friday
SSW wind 5 to 10 kt becoming SSE in the afternoon. Partly sunny. Waves 1 ft or less.
Friday Night
SW wind 5 to 10 kt. A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 3am. Waves 1 ft or less.
Saturday
WNW wind around 10 kt becoming N in the afternoon. Winds could gust as high as 15 kt. Mostly cloudy, then gradually becoming sunny. Waves 1 ft or less.
Saturday Night
NNW wind around 10 kt. Mostly clear. Waves 1 to 2 ft.
Sunday
N wind around 10 kt. Sunny. Waves around 2 ft.
Sunday Night
Variable winds 5 kt or less. Partly cloudy. Waves around 1 ft.
Monday
Variable winds 5 kt or less. Mostly sunny. Waves around 1 ft.
Monday Night
Variable winds 5 kt or less. Partly cloudy. Waves 1 ft or less.

*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: 8:41 pm CDT Aug 20, 2026
Forecast Valid: 10pm CDT Aug 20, 2026-6pm CDT Aug 27, 2026
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