For More Weather Information:

Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

Tonight
Low: 72 °F
Light Wind
< 1ft
Thursday
High: 74 °F
E 10kt
< 1ft
Thursday Night
Low: 71 °F
E 10kt
1ft
Friday
High: 76 °F
E 10kt
1ft
Friday Night
Low: 72 °F
ENE 10kt
1ft
Saturday
High: 82 °F
SE 10kt
1ft
Saturday Night
Low: 74 °F
Light Wind
< 1ft
Sunday
High: 82 °F
Light Wind
< 1ft
Sunday Night
Low: 70 °F
N 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: 9:46 pm CDT Aug 12, 2026
Forecast Valid: 10pm CDT Aug 12, 2026-6pm CDT Aug 19, 2026

View Nearby Observations

Detailed Forecast

Tonight

Variable winds 5 kt or less. Patchy fog after 2am. Waves 1 ft or less.

Thursday

E wind 5 to 10 kt. A chance of showers and thunderstorms before 3pm, then showers likely and possibly a thunderstorm between 3pm and 4pm, then a chance of showers and thunderstorms after 4pm. Patchy fog before 9am. Waves 1 ft or less.

Thursday Night

E wind 5 to 10 kt. A chance of showers and thunderstorms. Waves around 1 ft.

Friday

E wind around 10 kt. A chance of showers before 1pm. Waves around 1 ft.

Friday Night

ENE wind around 10 kt becoming ESE after midnight. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Waves around 1 ft.

Saturday

SE wind around 10 kt. A chance of showers and thunderstorms, mainly before 1pm. Waves around 1 ft.

Saturday Night

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

Sunday

Variable winds 5 kt or less. Winds could gust as high as 10 kt. A chance of showers, with thunderstorms also possible after 1pm. Waves 1 ft or less.

Sunday Night

N wind 5 to 10 kt. A chance of showers before 1am. 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.