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Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

Today
High: 55 °F
⇑NNW 30kt
6ft

Gale Warning
Tonight
Low: 44 °F
NNW 30kt⇓
9ft

Gale Warning
Saturday
High: 54 °F
NNW 10kt
5ft
Saturday Night
Low: 44 °F
SSW 10kt
1ft
Sunday
High: 62 °F
SSW 10kt
1ft
Sunday Night
Low: 51 °F
S 10kt
< 1ft
Monday
High: 66 °F
Light Wind
< 1ft
Monday Night
Low: 53 °F
Light Wind
< 1ft
Tuesday
High: 66 °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: 4:01 am CDT Oct 16, 2026
Forecast Valid: 5am CDT Oct 16, 2026-6pm CDT Oct 22, 2026

View Nearby Observations

Detailed Forecast

Today

WNW wind 15 to 20 kt becoming NNW 25 to 30 kt in the afternoon. Winds could gust as high as 40 kt. Showers likely, mainly between 2pm and 4pm. Waves 1 ft building to 6 ft.

Tonight

NNW wind 25 to 30 kt decreasing to 15 to 20 kt after midnight. Winds could gust as high as 40 kt. A slight chance of showers before 7pm. Waves 9 ft subsiding to 6 ft.

Saturday

NNW wind 5 to 10 kt becoming SW in the afternoon. Sunny. Waves 5 ft subsiding to 1 ft.

Saturday Night

SSW wind around 10 kt. Clear. Waves around 1 ft.

Sunday

SSW wind around 10 kt, with gusts as high as 15 kt. Sunny. Waves around 1 ft.

Sunday Night

S wind 5 to 10 kt. Mostly clear. Waves 1 ft or less.

Monday

Variable winds 5 kt or less. Sunny. Waves 1 ft or less.

Monday Night

Variable winds 5 kt or less. Partly cloudy. Waves 1 ft or less.

Tuesday

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.