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Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

Monday
High: 73 °F
NNW 10kt
1-2ft
Monday Night
Low: 66 °F
Light Wind
< 1ft
Tuesday
High: 80 °F
WSW 10kt
< 1ft
Tuesday Night
Low: 69 °F
WSW 10kt
< 1ft
Wednesday
High: 74 °F
NNE 10kt
< 1ft
Wednesday Night
Low: 70 °F
NE 10kt
1ft
Thursday
High: 74 °F
Light Wind
< 1ft
Thursday Night
Low: 67 °F
NE 10kt
< 1ft
Friday
High: 78 °F
Light Wind
< 1ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 3:31 am CDT Aug 17, 2026
Forecast Valid: 3am CDT Aug 17, 2026-6pm CDT Aug 23, 2026

View Nearby Observations

Detailed Forecast

Monday

NNW wind 5 to 10 kt becoming NE in the afternoon. A slight chance of showers after 10am. Waves 1 to 2 ft.

Monday Night

Variable winds 5 kt or less. Mostly clear. Waves 1 ft or less.

Tuesday

WSW wind 5 to 10 kt. A chance of showers and thunderstorms after 1pm. Waves 1 ft or less.

Tuesday Night

WSW wind 5 to 10 kt becoming NW after midnight. Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Waves 1 ft or less.

Wednesday

NNW wind 5 to 10 kt becoming NNE in the afternoon. Partly sunny. Waves 1 ft or less.

Wednesday Night

NE wind 5 to 10 kt. Partly cloudy. Waves around 1 ft.

Thursday

Variable winds 5 kt or less. Mostly sunny. Waves 1 ft or less.

Thursday Night

NE wind 5 to 10 kt becoming SSE after midnight. Partly cloudy. Waves 1 ft or less.

Friday

Variable winds 5 kt or less. Mostly sunny. Waves 1 ft or less.

*Notices:

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.
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.