Hazardous Weather Conditions

For More Weather Information:

Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]
    • This Afternoon

      This Afternoon:Variable winds 5 kt or less. Showers and possibly a thunderstorm, mainly before 4pm, then a chance of showers and thunderstorms after 4pm. Some of the storms could produce heavy rainfall.   Waves 1 ft or less.

      High: 78 °F

      Light Wind
      < 1ft

    • Tonight

      Tonight:Variable winds 5 kt or less. A chance of showers and thunderstorms between 1am and 4am, then a slight chance of showers.   Waves 1 ft or less.

      Low: 75 °F

      Light Wind
      < 1ft

    • Wednesday

      Wednesday:Variable winds 5 kt or less. A chance of showers and thunderstorms, mainly between 11am and 5pm, then a slight chance of thunderstorms after 5pm.   Waves 1 ft or less.

      High: 75 °F

      Light Wind
      < 1ft

    • Wednesday Night

      Wednesday Night:Variable winds 5 kt or less. A slight chance of showers before 2am, then a chance of showers after 3am.   Waves 1 ft or less.

      Low: 73 °F

      Light Wind
      < 1ft

    • Thursday

      Thursday:Variable winds 5 kt or less. Showers likely, with thunderstorms also possible after 1pm.   Waves 1 ft or less.

      High: 76 °F

      Light Wind
      < 1ft

    • Thursday Night

      Thursday Night:NE wind around 10 kt. A chance of showers and thunderstorms.   Waves 1 to 2 ft.

      Low: 71 °F

      NE 10kt
      1-2ft

    • Friday

      Friday:NE wind around 10 kt. A slight chance of showers before 1pm.   Waves 2 to 3 ft.

      High: 74 °F

      NE 10kt
      2-3ft

    • Friday Night

      Friday Night:NE wind 10 to 15 kt becoming ESE after midnight. A chance of showers and thunderstorms after 1am.   Waves around 2 ft.

      Low: 70 °F

      NE 15kt
      2ft

    • Saturday

      Saturday:SE wind around 10 kt, with gusts as high as 15 kt. Showers likely and possibly a thunderstorm before 1pm.   Waves 1 to 2 ft.

      High: 79 °F

      SE 10kt
      1-2ft


High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 12:21 pm CDT Aug 11, 2026
Forecast Valid: 12pm CDT Aug 11, 2026-6pm CDT Aug 17, 2026

View Nearby Observations

Detailed Forecast

This Afternoon
Variable winds 5 kt or less. Showers and possibly a thunderstorm, mainly before 4pm, then a chance of showers and thunderstorms after 4pm. Some of the storms could produce heavy rainfall. Waves 1 ft or less.
Tonight
Variable winds 5 kt or less. A chance of showers and thunderstorms between 1am and 4am, then a slight chance of showers. Waves 1 ft or less.
Wednesday
Variable winds 5 kt or less. A chance of showers and thunderstorms, mainly between 11am and 5pm, then a slight chance of thunderstorms after 5pm. Waves 1 ft or less.
Wednesday Night
Variable winds 5 kt or less. A slight chance of showers before 2am, then a chance of showers after 3am. Waves 1 ft or less.
Thursday
Variable winds 5 kt or less. Showers likely, with thunderstorms also possible after 1pm. Waves 1 ft or less.
Thursday Night
NE wind around 10 kt. A chance of showers and thunderstorms. Waves 1 to 2 ft.
Friday
NE wind around 10 kt. A slight chance of showers before 1pm. Waves 2 to 3 ft.
Friday Night
NE wind 10 to 15 kt becoming ESE after midnight. A chance of showers and thunderstorms after 1am. Waves around 2 ft.
Saturday
SE wind around 10 kt, with gusts as high as 15 kt. Showers likely and possibly a thunderstorm before 1pm. Waves 1 to 2 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: 12:21 pm CDT Aug 11, 2026
Forecast Valid: 12pm CDT Aug 11, 2026-6pm CDT Aug 17, 2026
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