For More Weather Information:

Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

Late Afternoon
High: 76 °F
Light Wind
2ft
Tonight
Low: 72 °F
Light Wind
1-2ft
Wednesday
High: 78 °F
Light Wind
< 1ft
Wednesday Night
Low: 73 °F
Light Wind
< 1ft
Thursday
High: 76 °F
Light Wind
< 1ft
Thursday Night
Low: 71 °F
NE 10kt
1-2ft
Friday
High: 74 °F
NE 10kt
2ft
Friday Night
Low: 69 °F
NE 15kt
2ft
Saturday
High: 80 °F
SE 10kt
1-2ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 4:46 pm CDT Aug 11, 2026
Forecast Valid: 5pm CDT Aug 11, 2026-6pm CDT Aug 18, 2026

View Nearby Observations

Detailed Forecast

Late Afternoon

Variable winds 5 kt or less. A slight chance of showers and thunderstorms. Waves around 2 ft.

Tonight

Variable winds 5 kt or less. A chance of showers and thunderstorms, mainly between 1am and 4am. Waves 1 to 2 ft.

Wednesday

Variable winds 5 kt or less. A slight chance of showers and thunderstorms before 10am, then showers likely and possibly a thunderstorm between 10am and 4pm, then a slight chance of showers and thunderstorms after 4pm. Waves 1 ft or less.

Wednesday Night

Variable winds 5 kt or less. A chance of showers, mainly after 4am. Waves 1 ft or less.

Thursday

Variable winds 5 kt or less. Showers likely, with thunderstorms also possible after 1pm. Waves 1 ft or less.

Thursday Night

NE wind around 10 kt. A chance of showers and thunderstorms. Waves 1 to 2 ft.

Friday

NE wind around 10 kt. A slight chance of showers before 1pm. Waves around 2 ft.

Friday Night

NE wind 10 to 15 kt becoming ESE after midnight. A chance of showers and thunderstorms after 1am. Waves around 2 ft.

Saturday

SE wind around 10 kt, with gusts as high as 15 kt. Showers likely and possibly a thunderstorm before 1pm. Waves 1 to 2 ft.

*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.