For More Weather Information:

Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

Tonight
Low: 42 °F
⇑N 20kt
6ft

Small Craft Advisory
Friday
High: 47 °F
NNW 20kt
5ft

Small Craft Advisory
Friday Night
Low: 38 °F
NW 15kt
2-4ft

Small Craft Advisory
Saturday
High: 49 °F
NW 10kt
1-2ft

Small Craft Advisory
Saturday Night
Low: 40 °F
WSW 10kt
1ft
Sunday
High: 57 °F
WSW 10kt
< 1ft
Sunday Night
Low: 44 °F
Light Wind
< 1ft
Monday
High: 61 °F
SW 10kt
< 1ft
Monday Night
Low: 48 °F
SW 15kt
< 1ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 6:06 pm CST Nov 5, 2026
Forecast Valid: 6pm CST Nov 5, 2026-6pm CST Nov 12, 2026

View Nearby Observations

Detailed Forecast

Tonight

WNW wind 10 to 15 kt becoming N 15 to 20 kt in the evening. Winds could gust as high as 25 kt. Showers, mainly before midnight. Waves 1 ft or less building to 6 ft.

Friday

NNW wind 15 to 20 kt, with gusts as high as 25 kt. Partly sunny. Waves around 5 ft.

Friday Night

NW wind 10 to 15 kt. Mostly cloudy. Waves 2 to 4 ft.

Saturday

NW wind 5 to 10 kt becoming W in the afternoon. Winds could gust as high as 15 kt. Mostly sunny. Waves 1 to 2 ft.

Saturday Night

WSW wind 5 to 10 kt. Mostly clear. Waves around 1 ft.

Sunday

WSW wind around 10 kt. Sunny. Waves 1 ft or less.

Sunday Night

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

Monday

SW wind 5 to 10 kt, with gusts as high as 15 kt. Sunny. Waves 1 ft or less.

Monday Night

SW wind 10 to 15 kt becoming W after midnight. Mostly clear. 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.