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Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]
    • This Afternoon

      This Afternoon:NNW wind around 20 kt, with gusts as high as 30 kt. Rain, snow, and sleet before 2pm, then a chance of rain and snow.   Waves around 4 ft.

      High: 38 °F

      NNW 20kt
      4ft

      Small Craft Advisory
      Small Craft Advisory

    • Tonight

      Tonight:NW wind 10 to 20 kt. A slight chance of snow before 8pm.   Waves 2 to 4 ft.

      Low: 32 °F

      NW 20kt
      2-4ft

      Small Craft Advisory
      Small Craft Advisory

    • Thursday

      Thursday:W wind 5 to 10 kt becoming SW in the afternoon. Sunny. Waves 1 to 2 ft.

      High: 46 °F

      W 10kt
      1-2ft

    • Thursday Night

      Thursday Night:S wind 10 to 20 kt increasing to 20 to 30 kt after midnight. Winds could gust as high as 40 kt. A chance of showers.   Waves 1 ft building to 4 ft.

      Low: 40 °F

      ⇑S 30kt
      Waves Building4ft

    • Friday

      Friday:SW wind 25 to 30 kt becoming W in the afternoon. Winds could gust as high as 45 kt. Partly sunny. Waves around 3 ft.

      High: 48 °F

      SW 30kt
      3ft

    • Friday Night

      Friday Night:WNW wind 10 to 15 kt, with gusts as high as 25 kt. Mostly cloudy. Waves around 1 ft.

      Low: 32 °F

      WNW 15kt
      1ft

    • Saturday

      Saturday:Variable winds 5 kt or less. A slight chance of snow after 1pm.   Waves around 1 ft.

      High: 40 °F

      Light Wind
      1ft

    • Saturday Night

      Saturday Night:E wind 10 to 15 kt increasing to 15 to 20 kt after midnight. Rain and snow showers likely, mainly after 1am.   Waves 2 ft building to 6 ft.

      Low: 35 °F

      ⇑E 20kt
      Waves Building6ft

    • Sunday

      Sunday:ESE wind 20 to 25 kt becoming NNE in the afternoon. Rain and snow showers, becoming all rain after 1pm.   Waves 6 ft building to 9 ft.

      High: 50 °F

      ESE 25kt
      Waves Building9ft


High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 1:21 pm CDT Mar 11, 2026
Forecast Valid: 1pm CDT Mar 11, 2026-6pm CDT Mar 17, 2026

View Nearby Observations

Detailed Forecast

This Afternoon
NNW wind around 20 kt, with gusts as high as 30 kt. Rain, snow, and sleet before 2pm, then a chance of rain and snow. Waves around 4 ft.
Tonight
NW wind 10 to 20 kt. A slight chance of snow before 8pm. Waves 2 to 4 ft.
Thursday
W wind 5 to 10 kt becoming SW in the afternoon. Sunny. Waves 1 to 2 ft.
Thursday Night
S wind 10 to 20 kt increasing to 20 to 30 kt after midnight. Winds could gust as high as 40 kt. A chance of showers. Waves 1 ft building to 4 ft.
Friday
SW wind 25 to 30 kt becoming W in the afternoon. Winds could gust as high as 45 kt. Partly sunny. Waves around 3 ft.
Friday Night
WNW wind 10 to 15 kt, with gusts as high as 25 kt. Mostly cloudy. Waves around 1 ft.
Saturday
Variable winds 5 kt or less. A slight chance of snow after 1pm. Waves around 1 ft.
Saturday Night
E wind 10 to 15 kt increasing to 15 to 20 kt after midnight. Rain and snow showers likely, mainly after 1am. Waves 2 ft building to 6 ft.
Sunday
ESE wind 20 to 25 kt becoming NNE in the afternoon. Rain and snow showers, becoming all rain after 1pm. Waves 6 ft building to 9 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: 1:21 pm CDT Mar 11, 2026
Forecast Valid: 1pm CDT Mar 11, 2026-6pm CDT Mar 17, 2026
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