Hazardous Weather Conditions

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Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]
    • Overnight

      Overnight:E wind around 10 kt. A chance of showers and thunderstorms.   Waves around 1 ft.

      Low: 72 °F

      E 10kt
      1ft

    • Friday

      Friday:E wind 5 to 10 kt becoming NE in the afternoon. A chance of showers and thunderstorms before 11am, then a slight chance of showers between 11am and 1pm.   Waves around 1 ft.

      High: 75 °F

      E 10kt
      1ft

    • Friday Night

      Friday Night:NE wind around 10 kt becoming ESE after midnight. A chance of showers and thunderstorms, mainly after 3am.   Waves around 1 ft.

      Low: 73 °F

      ENE 10kt
      1ft

    • Saturday

      Saturday:SE wind around 10 kt. Showers and possibly a thunderstorm, mainly before 1pm, then a chance of showers and thunderstorms after 1pm.   Waves around 1 ft.

      High: 82 °F

      SE 10kt
      1ft

    • Saturday Night

      Saturday Night:SSW wind 5 to 10 kt becoming W after midnight. Showers likely and possibly a thunderstorm before 1am, then a slight chance of showers.   Waves 1 ft or less.

      Low: 76 °F

      SSW 10kt
      < 1ft

    • Sunday

      Sunday:Variable winds 5 kt or less. A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm.   Waves 1 ft or less.

      High: 80 °F

      Light Wind
      < 1ft

    • Sunday Night

      Sunday Night:NNW wind 5 to 10 kt. A slight chance of showers and thunderstorms before 1am.   Waves 1 ft or less.

      Low: 71 °F

      NNW 10kt
      < 1ft

    • Monday

      Monday:N wind around 10 kt. Mostly sunny. Waves around 1 ft.

      High: 75 °F

      N 10kt
      1ft

    • Monday Night

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

      Low: 68 °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: 9:46 pm CDT Aug 13, 2026
Forecast Valid: 11pm CDT Aug 13, 2026-6pm CDT Aug 20, 2026

View Nearby Observations

Detailed Forecast

Overnight
E wind around 10 kt. A chance of showers and thunderstorms. Waves around 1 ft.
Friday
E wind 5 to 10 kt becoming NE in the afternoon. A chance of showers and thunderstorms before 11am, then a slight chance of showers between 11am and 1pm. Waves around 1 ft.
Friday Night
NE wind around 10 kt becoming ESE after midnight. A chance of showers and thunderstorms, mainly after 3am. Waves around 1 ft.
Saturday
SE wind around 10 kt. Showers and possibly a thunderstorm, mainly before 1pm, then a chance of showers and thunderstorms after 1pm. Waves around 1 ft.
Saturday Night
SSW wind 5 to 10 kt becoming W after midnight. Showers likely and possibly a thunderstorm before 1am, then a slight chance of showers. Waves 1 ft or less.
Sunday
Variable winds 5 kt or less. A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Waves 1 ft or less.
Sunday Night
NNW wind 5 to 10 kt. A slight chance of showers and thunderstorms before 1am. Waves 1 ft or less.
Monday
N wind around 10 kt. Mostly sunny. Waves around 1 ft.
Monday Night
Variable winds 5 kt or less. Mostly clear. 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: 9:46 pm CDT Aug 13, 2026
Forecast Valid: 11pm CDT Aug 13, 2026-6pm CDT Aug 20, 2026
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