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Chicago, IL Local Forecast Office

17NM ENE Chicago IL

Marine Point Forecast

[NOTICE]
    • Overnight

      Overnight:NNW wind 15 to 20 kt. Partly cloudy. Waves around 5 ft.

      Low: 35 °F

      NNW 20kt
      5ft

      Gale Warning
      Gale Warning

    • Saturday

      Saturday:N wind 5 to 10 kt becoming ESE in the afternoon. Cloudy. Waves 2 to 4 ft.

      High: 35 °F

      E 10kt
      2-4ft

    • Saturday Night

      Saturday Night:ESE wind 15 to 20 kt, with gusts as high as 30 kt. A chance of rain, mainly between 1am and 4am.   Waves 2 to 4 ft.

      Low: 36 °FRising Temperatures

      ESE 20kt
      2-4ft

    • Sunday

      Sunday:SSE wind 20 to 25 kt. Rain likely, mainly after 1pm.   Waves 4 to 5 ft.

      High: 50 °F

      SSE 25kt
      4-5ft

    • Sunday Night

      Sunday Night:S wind around 25 kt becoming WNW after midnight. Winds could gust as high as 35 kt. Rain before 1am, then snow, possibly mixed with rain. Some thunder is also possible.   Waves 5 ft building to 13 ft.

      Low: 27 °FRising Temperatures

      WNW 25kt
      Waves Building13ft

    • Monday

      Monday:WNW wind around 30 kt, with gusts as high as 35 kt. Snow, possibly mixed with rain, becoming all snow after 7am.  Widespread freezing spray after 9am.  Waves 15 ft subsiding to 12 ft.

      High: 30 °F

      WNW 30kt
      15ftWaves Subsiding

    • Monday Night

      Monday Night:WNW wind 25 to 30 kt, with gusts as high as 35 kt. A chance of snow before 1am.  Widespread freezing spray.  Waves 11 ft subsiding to 8 ft.

      Low: 17 °FRising Temperatures

      WNW 30kt
      11ftWaves Subsiding

    • Tuesday

      Tuesday:WNW wind 15 to 20 kt decreasing to 10 to 15 kt in the afternoon. Widespread freezing spray before noon. Partly sunny. Waves 7 ft subsiding to 3 ft.

      High: 28 °F

      WNW 20kt⇓
      7ftWaves Subsiding

    • Tuesday Night

      Tuesday Night:WSW wind 10 to 15 kt becoming S 15 to 20 kt after midnight. A chance of snow.   Waves 2 to 4 ft.

      Low: 24 °FRising Temperatures

      ⇑S 20kt
      2-4ft


High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 11:57 pm CDT Mar 13, 2026
Forecast Valid: 12am CDT Mar 14, 2026-6pm CDT Mar 20, 2026

View Nearby Observations

Detailed Forecast

Overnight
NNW wind 15 to 20 kt. Partly cloudy. Waves around 5 ft.
Saturday
N wind 5 to 10 kt becoming ESE in the afternoon. Cloudy. Waves 2 to 4 ft.
Saturday Night
ESE wind 15 to 20 kt, with gusts as high as 30 kt. A chance of rain, mainly between 1am and 4am. Waves 2 to 4 ft.
Sunday
SSE wind 20 to 25 kt. Rain likely, mainly after 1pm. Waves 4 to 5 ft.
Sunday Night
S wind around 25 kt becoming WNW after midnight. Winds could gust as high as 35 kt. Rain before 1am, then snow, possibly mixed with rain. Some thunder is also possible. Waves 5 ft building to 13 ft.
Monday
WNW wind around 30 kt, with gusts as high as 35 kt. Snow, possibly mixed with rain, becoming all snow after 7am. Widespread freezing spray after 9am. Waves 15 ft subsiding to 12 ft.
Monday Night
WNW wind 25 to 30 kt, with gusts as high as 35 kt. A chance of snow before 1am. Widespread freezing spray. Waves 11 ft subsiding to 8 ft.
Tuesday
WNW wind 15 to 20 kt decreasing to 10 to 15 kt in the afternoon. Widespread freezing spray before noon. Partly sunny. Waves 7 ft subsiding to 3 ft.
Tuesday Night
WSW wind 10 to 15 kt becoming S 15 to 20 kt after midnight. A chance of snow. Waves 2 to 4 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: 41.91°N 87.32°W
Last Update: 11:57 pm CDT Mar 13, 2026
Forecast Valid: 12am CDT Mar 14, 2026-6pm CDT Mar 20, 2026
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