For More Weather Information:

Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

Late Afternoon
High: 75 °F
SW 10kt
< 1ft
Tonight
Low: 70 °F
WNW 10kt
< 1ft
Thursday
High: 75 °F
Light Wind
< 1ft
Thursday Night
Low: 70 °F
Light Wind
< 1ft
Friday
High: 83 °F
Light Wind
< 1ft
Friday Night
Low: 72 °F
Light Wind
< 1ft
Saturday
High: 81 °F
Light Wind
< 1ft
Saturday Night
Low: 70 °F
Light Wind
< 1ft
Sunday
High: 83 °F
SSW 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: 4:11 pm CDT Aug 5, 2026
Forecast Valid: 5pm CDT Aug 5, 2026-6pm CDT Aug 12, 2026

View Nearby Observations

Detailed Forecast

Late Afternoon

SW wind around 10 kt. A chance of showers and thunderstorms. Waves 1 ft or less.

Tonight

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

Thursday

Variable winds 5 kt or less. A slight chance of showers before 7am. Waves 1 ft or less.

Thursday Night

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

Friday

Variable winds 5 kt or less. A slight chance of showers after 1pm. Waves 1 ft or less.

Friday Night

Variable winds 5 kt or less. Winds could gust as high as 10 kt. A chance of showers and thunderstorms. Waves 1 ft or less.

Saturday

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

Saturday Night

Variable winds 5 kt or less. A chance of showers and thunderstorms after 1am. Waves 1 ft or less.

Sunday

SSW wind 5 to 10 kt. A chance of showers and thunderstorms. 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.