Areas of Dangerous Heat and Heavy Rain with Possible Flooding into this Weekend

Hot temperatures and high humidity are forecast to continue across much of northeast Texas into the mid-Mississippi Valley into this weekend with heat advisories in effect. Heavy to excessive rainfall occurring at times through Saturday could bring areas of flooding across parts of the central Plains into the upper Midwest/Great Lakes, and Four Corners states. Read More >

Hazardous Weather Conditions

For More Weather Information:

Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]
    • Today

      Today:Variable winds 5 kt or less. Showers and thunderstorms before 11am, then a slight chance of showers between 11am and noon.  Patchy fog before 10am.  Waves around 1 ft.

      High: 72 °F

      Light Wind
      1ft

    • Tonight

      Tonight:NE wind around 10 kt. Mostly cloudy. Waves 1 to 2 ft.

      Low: 67 °F

      NE 10kt
      1-2ft

    • Friday

      Friday:E wind 10 to 15 kt. Mostly cloudy. Waves 2 to 3 ft.

      High: 68 °F

      E 15kt
      2-3ft

    • Friday Night

      Friday Night:ESE wind around 15 kt. A slight chance of showers, then showers likely and possibly a thunderstorm after 1am.   Waves 2 to 3 ft.

      Low: 65 °F

      ESE 15kt
      2-3ft

    • Saturday

      Saturday:SSE wind 10 to 15 kt. Showers and possibly a thunderstorm.   Waves 1 to 2 ft.

      High: 77 °F

      SSE 15kt
      1-2ft

    • Saturday Night

      Saturday Night:S wind around 10 kt becoming N after midnight. Showers and possibly a thunderstorm.   Waves 1 ft or less.

      Low: 65 °F

      ENE 10kt
      < 1ft

    • Sunday

      Sunday:NE wind 15 to 25 kt. A chance of showers and thunderstorms.   Waves 3 ft building to 7 ft.

      High: 68 °F

      NE 25kt
      Waves Building7ft

    • Sunday Night

      Sunday Night:E wind 20 to 25 kt. A chance of showers.   Waves 6 to 7 ft. occasionally to 9ft.

      Low: 60 °F

      E 25kt
      6-7ft

    • Monday

      Monday:E wind 20 to 25 kt. Showers likely.   Waves 5 to 7 ft. occasionally to 9ft.

      High: 66 °F

      E 25kt
      5-7ft


High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 7:41 am CDT Sep 17, 2026
Forecast Valid: 7am CDT Sep 17, 2026-6pm CDT Sep 23, 2026

View Nearby Observations

Detailed Forecast

Today
Variable winds 5 kt or less. Showers and thunderstorms before 11am, then a slight chance of showers between 11am and noon. Patchy fog before 10am. Waves around 1 ft.
Tonight
NE wind around 10 kt. Mostly cloudy. Waves 1 to 2 ft.
Friday
E wind 10 to 15 kt. Mostly cloudy. Waves 2 to 3 ft.
Friday Night
ESE wind around 15 kt. A slight chance of showers, then showers likely and possibly a thunderstorm after 1am. Waves 2 to 3 ft.
Saturday
SSE wind 10 to 15 kt. Showers and possibly a thunderstorm. Waves 1 to 2 ft.
Saturday Night
S wind around 10 kt becoming N after midnight. Showers and possibly a thunderstorm. Waves 1 ft or less.
Sunday
NE wind 15 to 25 kt. A chance of showers and thunderstorms. Waves 3 ft building to 7 ft.
Sunday Night
E wind 20 to 25 kt. A chance of showers. Waves 6 to 7 ft. occasionally to 9ft.
Monday
E wind 20 to 25 kt. Showers likely. Waves 5 to 7 ft. occasionally to 9ft.

*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: 7:41 am CDT Sep 17, 2026
Forecast Valid: 7am CDT Sep 17, 2026-6pm CDT Sep 23, 2026
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