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Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]
    • Overnight

      Overnight:N wind 10 to 15 kt becoming S after midnight. Showers and thunderstorms before 3am, then showers and possibly a thunderstorm, mainly after 3am. Some of the storms could be severe.  Areas of fog.  Waves around 2 ft.

      Low: 39 °F

      NNW 15kt
      2ft

    • Wednesday

      Wednesday:NNW wind 15 to 20 kt, with gusts as high as 30 kt. Rain showers, possibly mixed with sleet before 3pm, then a slight chance of rain and snow showers between 3pm and 4pm. Some thunder is also possible.   Waves 2 to 4 ft.

      High: 44 °FFalling Temperatures

      NNW 20kt
      2-4ft

      Small Craft Advisory
      Small Craft Advisory

    • Wednesday Night

      Wednesday Night:NNW wind 10 to 20 kt becoming W after midnight. Cloudy during the early evening, then gradual clearing. Waves 2 to 4 ft.

      Low: 32 °F

      NNW 20kt
      2-4ft

      Small Craft Advisory
      Small Craft Advisory

    • Thursday

      Thursday:W wind 5 to 10 kt. Sunny. Waves 1 to 2 ft.

      High: 46 °F

      W 10kt
      1-2ft

    • Thursday Night

      Thursday Night:S wind 10 to 15 kt increasing to 20 to 25 kt after midnight. Winds could gust as high as 35 kt. Showers likely, mainly after 1am.   Waves 1 to 3 ft.

      Low: 40 °F

      ⇑S 25kt
      1-3ft

    • Friday

      Friday:SW wind 20 to 25 kt becoming WNW in the afternoon. Winds could gust as high as 35 kt. Mostly sunny. Waves 2 to 3 ft.

      High: 48 °F

      SW 25kt
      2-3ft

    • Friday Night

      Friday Night:WNW wind 10 to 15 kt. Mostly cloudy. Waves around 1 ft.

      Low: 31 °F

      WNW 15kt
      1ft

    • Saturday

      Saturday:N wind 5 to 10 kt becoming ESE in the afternoon. A chance of snow showers.   Waves around 2 ft.

      High: 40 °F

      E 10kt
      2ft

    • Saturday Night

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

      Low: 36 °F

      E 20kt
      Waves Building6ft


High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 11:01 pm CDT Mar 10, 2026
Forecast Valid: 11pm CDT Mar 10, 2026-6pm CDT Mar 17, 2026

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Detailed Forecast

Overnight
N wind 10 to 15 kt becoming S after midnight. Showers and thunderstorms before 3am, then showers and possibly a thunderstorm, mainly after 3am. Some of the storms could be severe. Areas of fog. Waves around 2 ft.
Wednesday
NNW wind 15 to 20 kt, with gusts as high as 30 kt. Rain showers, possibly mixed with sleet before 3pm, then a slight chance of rain and snow showers between 3pm and 4pm. Some thunder is also possible. Waves 2 to 4 ft.
Wednesday Night
NNW wind 10 to 20 kt becoming W after midnight. Cloudy during the early evening, then gradual clearing. Waves 2 to 4 ft.
Thursday
W wind 5 to 10 kt. Sunny. Waves 1 to 2 ft.
Thursday Night
S wind 10 to 15 kt increasing to 20 to 25 kt after midnight. Winds could gust as high as 35 kt. Showers likely, mainly after 1am. Waves 1 to 3 ft.
Friday
SW wind 20 to 25 kt becoming WNW in the afternoon. Winds could gust as high as 35 kt. Mostly sunny. Waves 2 to 3 ft.
Friday Night
WNW wind 10 to 15 kt. Mostly cloudy. Waves around 1 ft.
Saturday
N wind 5 to 10 kt becoming ESE in the afternoon. A chance of snow showers. Waves around 2 ft.
Saturday Night
E wind 15 to 20 kt. Rain and snow showers likely, mainly after 1am. Waves 2 ft building to 6 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: 11:01 pm CDT Mar 10, 2026
Forecast Valid: 11pm CDT Mar 10, 2026-6pm CDT Mar 17, 2026
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