Areas of Dangerous Heat and Heavy Rainfall Today

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley today. Heat Advisories remain in effect. Heavy to excessive rainfall today could bring areas of flooding to parts of the northern High Plains and Midwest into the Ohio Valley. Flood Watches remain in effect. Read More >

For More Weather Information:

Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]
    • This Afternoon

      This Afternoon:NE wind around 25 kt. Showers.   Waves around 8 ft.

      High: 64 °F

      NE 25kt
      8ft

      Small Craft Advisory
      Small Craft Advisory

    • Tonight

      Tonight:ENE wind around 20 kt, with gusts as high as 30 kt. Showers likely, mainly before 1am.   Waves 7 to 8 ft. occasionally to 10ft.

      Low: 60 °F

      ENE 20kt
      7-8ft

      Small Craft Advisory
      Small Craft Advisory

    • Monday

      Monday:ENE wind 15 to 20 kt. A slight chance of showers before 1pm.   Waves around 7 ft.

      High: 65 °F

      ENE 20kt
      7ft

      Small Craft Advisory
      Small Craft Advisory

    • Monday Night

      Monday Night:ENE wind 15 to 20 kt. Cloudy. Waves 6 to 8 ft. occasionally to 10ft.

      Low: 57 °F

      ENE 20kt
      6-8ft

      Small Craft Advisory
      Small Craft Advisory

    • Tuesday

      Tuesday:NE wind 15 to 20 kt. Partly sunny. Waves 6 to 7 ft. occasionally to 9ft.

      High: 64 °F

      NE 20kt
      6-7ft

      Small Craft Advisory
      Small Craft Advisory

    • Tuesday Night

      Tuesday Night:ENE wind 15 to 20 kt. Partly cloudy. Waves 5 to 7 ft. occasionally to 9ft.

      Low: 58 °F

      ENE 20kt
      5-7ft

      Small Craft Advisory
      Small Craft Advisory

    • Wednesday

      Wednesday:ENE wind around 15 kt. Partly sunny. Waves around 5 ft.

      High: 65 °F

      ENE 15kt
      5ft

      Small Craft Advisory
      Small Craft Advisory

    • Wednesday Night

      Wednesday Night:ENE wind 15 to 20 kt. Partly cloudy. Waves 3 to 5 ft.

      Low: 58 °F

      ENE 20kt
      3-5ft

    • Thursday

      Thursday:ENE wind 10 to 15 kt. Partly sunny. Waves 2 to 3 ft.

      High: 66 °F

      ENE 15kt
      2-3ft


High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 2:46 pm CDT Sep 20, 2026
Forecast Valid: 4pm CDT Sep 20, 2026-6pm CDT Sep 27, 2026

View Nearby Observations

Detailed Forecast

This Afternoon
NE wind around 25 kt. Showers. Waves around 8 ft.
Tonight
ENE wind around 20 kt, with gusts as high as 30 kt. Showers likely, mainly before 1am. Waves 7 to 8 ft. occasionally to 10ft.
Monday
ENE wind 15 to 20 kt. A slight chance of showers before 1pm. Waves around 7 ft.
Monday Night
ENE wind 15 to 20 kt. Cloudy. Waves 6 to 8 ft. occasionally to 10ft.
Tuesday
NE wind 15 to 20 kt. Partly sunny. Waves 6 to 7 ft. occasionally to 9ft.
Tuesday Night
ENE wind 15 to 20 kt. Partly cloudy. Waves 5 to 7 ft. occasionally to 9ft.
Wednesday
ENE wind around 15 kt. Partly sunny. Waves around 5 ft.
Wednesday Night
ENE wind 15 to 20 kt. Partly cloudy. Waves 3 to 5 ft.
Thursday
ENE wind 10 to 15 kt. Partly sunny. Waves 2 to 3 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: 2:46 pm CDT Sep 20, 2026
Forecast Valid: 4pm CDT Sep 20, 2026-6pm CDT Sep 27, 2026
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