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Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

Tonight
Low: 53 °F
⇑W 20kt
1-2ft

Small Craft Advisory
Friday
High: 55 °F
NNW 25kt
6ft

Gale Warning
Friday Night
Low: 48 °F
N 25kt
9ft

Gale Warning
Saturday
High: 56 °F
N 10kt
4ft
Saturday Night
Low: 49 °F
SSW 10kt
1ft
Sunday
High: 60 °F
SSW 15kt
1ft
Sunday Night
Low: 50 °F
SSW 10kt
< 1ft
Monday
High: 65 °F
Light Wind
< 1ft
Monday Night
Low: 53 °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: 2:51 pm CDT Oct 15, 2026
Forecast Valid: 6pm CDT Oct 15, 2026-6pm CDT Oct 22, 2026

View Nearby Observations

Detailed Forecast

Tonight

SSE wind 10 to 15 kt becoming W 15 to 20 kt in the evening. Winds could gust as high as 30 kt. Showers and possibly a thunderstorm before 10pm, then a slight chance of showers between 10pm and 1am. Waves 1 to 2 ft.

Friday

WNW wind 20 to 25 kt becoming NNW in the afternoon. Winds could gust as high as 35 kt. Showers likely, mainly after 1pm. A slight chance of waterspouts after 1pm. Waves 2 ft building to 6 ft.

Friday Night

N wind 15 to 25 kt, with gusts as high as 35 kt. Mostly cloudy. Waves 9 ft subsiding to 6 ft.

Saturday

N wind 5 to 10 kt becoming SW in the afternoon. Partly sunny, then gradually becoming sunny. Waves 4 ft subsiding to 1 ft.

Saturday Night

SSW wind around 10 kt. Mostly clear. Waves around 1 ft.

Sunday

SSW wind 10 to 15 kt. Sunny. Waves around 1 ft.

Sunday Night

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

Monday

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

Monday Night

Variable winds 5 kt or less. Partly cloudy. 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.