For More Weather Information:

Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

Today
High: 79 °F
SW 10kt
< 1ft
Tonight
Low: 70 °F
Light Wind
< 1ft
Thursday
High: 74 °F
Light Wind
< 1ft
Thursday Night
Low: 69 °F
Light Wind
< 1ft
Friday
High: 80 °F
Light Wind
< 1ft
Friday Night
Low: 71 °F
Light Wind
< 1ft
Saturday
High: 80 °F
Light Wind
< 1ft
Saturday Night
Low: 71 °F
Light Wind
< 1ft
Sunday
High: 84 °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: 3:25 am CDT Aug 5, 2026
Forecast Valid: 5am CDT Aug 5, 2026-6pm CDT Aug 11, 2026

View Nearby Observations

Detailed Forecast

Today

SW wind 5 to 10 kt. A chance of showers and thunderstorms, mainly after 5pm. Waves 1 ft or less.

Tonight

Variable winds 5 kt or less. Showers likely and possibly a thunderstorm before 11pm, then a chance of showers and thunderstorms after 11pm. 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. Partly sunny. Waves 1 ft or less.

Friday Night

Variable winds 5 kt or less. A chance of showers and thunderstorms, mainly before 1am. 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

SW 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.