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Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]
    • Late Afternoon

      Late Afternoon:SW wind around 10 kt. A chance of showers and thunderstorms.   Waves 1 ft or less.

      High: 75 °F

      SW 10kt
      < 1ft

    • Tonight

      Tonight:WNW wind 5 to 10 kt becoming ESE in the evening. A chance of showers and thunderstorms before 7pm, then showers likely and possibly a thunderstorm between 7pm and 10pm, then a chance of showers and thunderstorms after 10pm.   Waves 1 ft or less.

      Low: 70 °F

      WNW 10kt
      < 1ft

    • Thursday

      Thursday:Variable winds 5 kt or less. A slight chance of showers before 7am.   Waves 1 ft or less.

      High: 75 °F

      Light Wind
      < 1ft

    • Thursday Night

      Thursday Night:Variable winds 5 kt or less. Mostly cloudy. Waves 1 ft or less.

      Low: 70 °F

      Light Wind
      < 1ft

    • Friday

      Friday:Variable winds 5 kt or less. A slight chance of showers after 1pm.   Waves 1 ft or less.

      High: 83 °F

      Light Wind
      < 1ft

    • Friday Night

      Friday Night:Variable winds 5 kt or less. Winds could gust as high as 10 kt. A chance of showers and thunderstorms.   Waves 1 ft or less.

      Low: 72 °F

      Light Wind
      < 1ft

    • Saturday

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

      High: 81 °F

      Light Wind
      < 1ft

    • Saturday Night

      Saturday Night:Variable winds 5 kt or less. A chance of showers and thunderstorms after 1am.   Waves 1 ft or less.

      Low: 70 °F

      Light Wind
      < 1ft

    • Sunday

      Sunday:SSW wind 5 to 10 kt. A chance of showers and thunderstorms.   Waves 1 ft or less.

      High: 83 °F

      SSW 10kt
      < 1ft


High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 4:11 pm CDT Aug 5, 2026
Forecast Valid: 5pm CDT Aug 5, 2026-6pm CDT Aug 12, 2026

View Nearby Observations

Detailed Forecast

Late Afternoon
SW wind around 10 kt. A chance of showers and thunderstorms. Waves 1 ft or less.
Tonight
WNW wind 5 to 10 kt becoming ESE in the evening. A chance of showers and thunderstorms before 7pm, then showers likely and possibly a thunderstorm between 7pm and 10pm, then a chance of showers and thunderstorms after 10pm. Waves 1 ft or less.
Thursday
Variable winds 5 kt or less. A slight chance of showers before 7am. Waves 1 ft or less.
Thursday Night
Variable winds 5 kt or less. Mostly cloudy. Waves 1 ft or less.
Friday
Variable winds 5 kt or less. A slight chance of showers after 1pm. Waves 1 ft or less.
Friday Night
Variable winds 5 kt or less. Winds could gust as high as 10 kt. A chance of showers and thunderstorms. Waves 1 ft or less.
Saturday
Variable winds 5 kt or less. Mostly sunny. Waves 1 ft or less.
Saturday Night
Variable winds 5 kt or less. A chance of showers and thunderstorms after 1am. Waves 1 ft or less.
Sunday
SSW wind 5 to 10 kt. A chance of showers and thunderstorms. 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: 4:11 pm CDT Aug 5, 2026
Forecast Valid: 5pm CDT Aug 5, 2026-6pm CDT Aug 12, 2026
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