For More Weather Information:

Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

Tonight
Low: 37 °F
NE 10kt
1ft
Monday
High: 44 °F
E 10kt
1ft
Monday Night
Low: 44 °F
S 15kt
1ft
Tuesday
High: 69 °F
SW 15kt
1ft
Tuesday Night
Low: 49 °F
Light Wind
< 1ft
Wednesday
High: 64 °F
Light Wind
< 1ft
Wednesday Night
Low: 53 °F
S 10kt
1ft
Thursday
High: 78 °F
S 15kt
1-2ft
Thursday Night
Low: 58 °F
S 15kt
2ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 7:05 pm CDT Apr 19, 2026
Forecast Valid: 7pm CDT Apr 19, 2026-6pm CDT Apr 26, 2026

View Nearby Observations

Detailed Forecast

Tonight

NE wind 5 to 10 kt becoming N after midnight. A slight chance of showers before 8pm. Waves around 1 ft.

Monday

E wind 5 to 10 kt. Sunny. Waves around 1 ft.

Monday Night

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

Tuesday

SW wind 10 to 15 kt. Mostly sunny. Waves around 1 ft.

Tuesday Night

Variable winds 5 kt or less. Winds could gust as high as 10 kt. A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Waves 1 ft or less.

Wednesday

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

Wednesday Night

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

Thursday

S wind 10 to 15 kt, with gusts as high as 20 kt. Mostly sunny. Waves 1 to 2 ft.

Thursday Night

S wind around 15 kt, with gusts as high as 20 kt. Showers likely. Waves around 2 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.