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Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

This Afternoon
High: 70 °F
WNW 10kt
< 1ft
Tonight
Low: 64 °F
N 15kt
1-2ft

Small Craft Advisory
Friday
High: 62 °F
N 15kt
3-4ft

Small Craft Advisory
Friday Night
Low: 53 °F
NNE 15kt
2-3ft

Small Craft Advisory
Saturday
High: 62 °F
ESE 10kt
1-2ft
Saturday Night
Low: 54 °F
Light Wind
< 1ft
Sunday
High: 70 °F
Light Wind
< 1ft
Sunday Night
Low: 54 °F
NNW 10kt
< 1ft
Monday
High: 60 °F
N 10kt
1-2ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 2:46 pm CDT Oct 1, 2026
Forecast Valid: 3pm CDT Oct 1, 2026-6pm CDT Oct 7, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

WNW wind around 10 kt. Rain and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Waves 1 ft or less.

Tonight

N wind 10 to 15 kt, with gusts as high as 20 kt. Rain and possibly a thunderstorm before 1am, then a slight chance of rain between 1am and 3am. Some of the storms could produce heavy rainfall. Waves 1 to 2 ft.

Friday

N wind around 15 kt, with gusts as high as 20 kt. Mostly cloudy through mid morning, then gradual clearing. Waves 3 to 4 ft.

Friday Night

NNE wind 10 to 15 kt becoming E after midnight. Mostly clear. Waves 2 to 3 ft.

Saturday

ESE wind 5 to 10 kt. Sunny. Waves 1 to 2 ft.

Saturday Night

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

Sunday

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

Sunday Night

NNW wind 5 to 10 kt. Mostly clear. Waves 1 ft or less.

Monday

N wind around 10 kt. Sunny. Waves 1 to 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.