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Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

Sunday
High: 56 °F
S 25kt
3ft

Gale Warning
Sunday Night
Low: 25 °F
W 25kt
8ft

Gale Warning
Monday
High: 26 °F
WNW 25kt
6-8ft

Gale Warning
Monday Night
Low: 16 °F
WNW 25kt
3-5ft

Gale Warning
Tuesday
High: 28 °F
WNW 15kt
1-2ft
Tuesday Night
Low: 24 °F
S 15kt
1-2ft
Wednesday
High: 43 °F
S 15kt
1-2ft
Wednesday Night
Low: 36 °F
Light Wind
< 1ft
Thursday
High: 50 °F
Light Wind
< 1ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 4:31 am CDT Mar 15, 2026
Forecast Valid: 4am CDT Mar 15, 2026-6pm CDT Mar 21, 2026

View Nearby Observations

Detailed Forecast

Sunday

SE wind 15 to 25 kt becoming S in the morning. Winds could gust as high as 40 kt. Showers and thunderstorms likely, mainly before 2pm, then showers likely and possibly a thunderstorm after 4pm. Waves around 3 ft.

Sunday Night

SSW wind 20 to 25 kt becoming W after midnight. Winds could gust as high as 40 kt. Rain showers before 2am, then rain and snow showers likely between 2am and 4am, then snow showers likely after 4am. Some thunder is also possible. Waves 2 ft building to 8 ft.

Monday

WNW wind around 25 kt, with gusts as high as 35 kt. Snow showers likely, mainly before 1pm. Widespread freezing spray. Waves 6 to 8 ft. occasionally to 10ft.

Monday Night

WNW wind 15 to 25 kt. A slight chance of snow showers before 1am. Widespread freezing spray before 8pm. Waves 3 to 5 ft.

Tuesday

WNW wind 10 to 15 kt becoming WSW in the afternoon. Mostly sunny. Waves 1 to 2 ft.

Tuesday Night

S wind 10 to 15 kt. Snow showers likely, mainly after 1am. Waves 1 to 2 ft.

Wednesday

S wind 10 to 15 kt. A slight chance of snow showers before 1pm. Waves 1 to 2 ft.

Wednesday Night

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

Thursday

Variable winds 5 kt or less. Mostly sunny. 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.