For More Weather Information:

Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

This Afternoon
High: 48 °F
Light Wind
< 1ft
Tonight
Low: 43 °F
SW 10kt
< 1ft
Friday
High: 56 °F
SW 10kt
< 1ft
Friday Night
Low: 39 °F
Light Wind
< 1ft
Saturday
High: 58 °F
Light Wind
< 1ft
Saturday Night
Low: 48 °F
SSW 10kt
< 1ft
Sunday
High: 57 °F
NNW 15kt
5ft
Sunday Night
Low: 34 °F
N 20kt
6-7ft
Monday
High: 39 °F
N 15kt
6ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 1:21 pm CDT Mar 19, 2026
Forecast Valid: 1pm CDT Mar 19, 2026-6pm CDT Mar 25, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

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

Tonight

N wind 5 to 10 kt becoming S after midnight. Winds could gust as high as 15 kt. Partly cloudy. Waves 1 ft or less.

Friday

SW wind around 10 kt becoming N in the afternoon. Partly sunny. Waves 1 ft or less.

Friday Night

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

Saturday

Variable winds 5 kt or less. Winds could gust as high as 10 kt. Mostly sunny. Waves 1 ft or less.

Saturday Night

SSW wind 5 to 10 kt. Partly cloudy. Waves 1 ft or less.

Sunday

WSW wind 10 to 15 kt becoming NNW in the afternoon. Winds could gust as high as 25 kt. A slight chance of showers before 1pm. Waves 2 ft building to 5 ft.

Sunday Night

N wind 15 to 20 kt. Mostly cloudy. Waves 6 to 7 ft. occasionally to 9ft.

Monday

N wind 5 to 15 kt. Mostly sunny. Waves 6 ft subsiding to 3 ft.

*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.