For More Weather Information:

Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

Tonight
Low: 40 °F
WNW 15kt
< 1ft

Small Craft Advisory
Sunday
High: 50 °F
WNW 10kt
< 1ft
Sunday Night
Low: 37 °F
NNW 10kt
1ft
Monday
High: 48 °F
Light Wind
1ft
Monday Night
Low: 44 °F
S 15kt
1ft
Tuesday
High: 70 °F
SSW 15kt
< 1ft
Tuesday Night
Low: 49 °F
WSW 10kt
< 1ft
Wednesday
High: 63 °F
Light Wind
1ft
Wednesday Night
Low: 51 °F
S 10kt
1ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 7:01 pm CDT Apr 18, 2026
Forecast Valid: 7pm CDT Apr 18, 2026-6pm CDT Apr 25, 2026

View Nearby Observations

Detailed Forecast

Tonight

WNW wind 10 to 15 kt becoming WSW after midnight. Winds could gust as high as 25 kt. Mostly clear. Waves 1 ft or less.

Sunday

WSW wind around 10 kt becoming NNW in the afternoon. Winds could gust as high as 20 kt. A slight chance of rain and snow showers before 8am, then a chance of rain showers. Waves 1 ft or less.

Sunday Night

NNW wind 5 to 10 kt becoming NE after midnight. Partly cloudy. Waves around 1 ft.

Monday

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

Monday Night

SE wind 10 to 15 kt becoming S after midnight. Mostly cloudy. Waves around 1 ft.

Tuesday

SSW wind 10 to 15 kt. A slight chance of showers after 1pm. Waves 1 ft or less.

Tuesday Night

WSW wind 5 to 10 kt becoming NNW after midnight. A slight chance of showers before 1am. Waves 1 ft or less.

Wednesday

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

Wednesday Night

ENE wind 5 to 10 kt becoming S after midnight. Partly cloudy. Waves around 1 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.