For More Weather Information:

Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

This Afternoon
High: 76 °F
NNW 10kt
1-2ft
Tonight
Low: 66 °F
NNW 10kt
1-2ft

Small Craft Advisory
Sunday
High: 74 °F
NW 10kt
2ft

Small Craft Advisory
Sunday Night
Low: 64 °F
N 10kt
1-2ft
Monday
High: 73 °F
Light Wind
1ft
Monday Night
Low: 66 °F
Light Wind
< 1ft
Tuesday
High: 78 °F
Light Wind
< 1ft
Tuesday Night
Low: 67 °F
Light Wind
< 1ft
Wednesday
High: 82 °F
SW 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: 12:06 pm CDT Aug 22, 2026
Forecast Valid: 12pm CDT Aug 22, 2026-6pm CDT Aug 28, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

NNW wind around 10 kt, with gusts as high as 20 kt. A slight chance of showers and thunderstorms after 2pm. Waves 1 to 2 ft.

Tonight

NNW wind around 10 kt, with gusts as high as 15 kt. A slight chance of showers and thunderstorms before 9pm. A slight chance of waterspouts after 10pm. Waves 1 to 2 ft.

Sunday

NW wind around 10 kt, with gusts as high as 20 kt. A slight chance of waterspouts before 10am. Sunny. Waves around 2 ft.

Sunday Night

N wind 5 to 10 kt becoming W after midnight. Mostly clear. Waves 1 to 2 ft.

Monday

Variable winds 5 kt or less. Mostly sunny. Waves around 1 ft.

Monday Night

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

Tuesday

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

Tuesday Night

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

Wednesday

SW wind 5 to 10 kt. A chance of showers and thunderstorms after 1pm. 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.