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Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

Tonight
Low: 45 °F
S 20kt
1-2ft

Small Craft Advisory
Saturday
High: 49 °F
WNW 15kt
1ft

Small Craft Advisory
Saturday Night
Low: 40 °F
WNW 15kt
< 1ft

Small Craft Advisory
Sunday
High: 50 °F
WNW 10kt
< 1ft
Sunday Night
Low: 37 °F
N 10kt
1ft
Monday
High: 50 °F
ESE 10kt
1ft
Monday Night
Low: 47 °F
S 15kt
1ft
Tuesday
High: 68 °F
SW 15kt
1ft
Tuesday Night
Low: 48 °F
N 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: 5:21 pm CDT Apr 17, 2026
Forecast Valid: 5pm CDT Apr 17, 2026-6pm CDT Apr 24, 2026

View Nearby Observations

Detailed Forecast

Tonight

S wind 15 to 20 kt becoming WSW after midnight. Winds could gust as high as 30 kt. Showers and thunderstorms before 2am, then showers likely. Some of the storms could be severe. Waves 1 to 2 ft.

Saturday

WNW wind around 15 kt, with gusts as high as 20 kt. A slight chance of showers, mainly between 8am and 10am. Waves around 1 ft.

Saturday Night

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

Sunday Night

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

Monday

NE wind 5 to 10 kt becoming ESE in the afternoon. Sunny. Waves around 1 ft.

Monday Night

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

Tuesday

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

Tuesday Night

W wind around 10 kt becoming N after midnight. 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.