For More Weather Information:

Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

This Afternoon
High: 73 °F
Light Wind
1ft
Tonight
Low: 69 °F
Light Wind
< 1ft
Tuesday
High: 79 °F
WSW 10kt
< 1ft
Tuesday Night
Low: 69 °F
SW 10kt
< 1ft
Wednesday
High: 74 °F
NNE 10kt
< 1ft
Wednesday Night
Low: 70 °F
NE 10kt
< 1ft
Thursday
High: 75 °F
Light Wind
< 1ft
Thursday Night
Low: 67 °F
Light Wind
< 1ft
Friday
High: 79 °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: 2:46 pm CDT Aug 17, 2026
Forecast Valid: 4pm CDT Aug 17, 2026-6pm CDT Aug 24, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

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

Tonight

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

Tuesday

WSW wind 5 to 10 kt. A slight chance of showers and thunderstorms after 4pm. Waves 1 ft or less.

Tuesday Night

SW wind 5 to 10 kt becoming WNW after midnight. A chance of showers and thunderstorms before 7pm, then showers likely and possibly a thunderstorm between 7pm and 1am, then a chance of showers after 1am. Waves 1 ft or less.

Wednesday

NW wind 5 to 10 kt becoming NNE in the afternoon. Mostly sunny. Waves 1 ft or less.

Wednesday Night

NE wind 5 to 10 kt. Partly cloudy. Waves 1 ft or less.

Thursday

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

Thursday Night

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

Friday

Variable winds 5 kt or less. Winds could gust as high as 10 kt. 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.