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Chicago, IL Local Forecast Office

17NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

Today
High: 42 °F
NE 10kt
< 1ft
Tonight
Low: 38 °F
Light Wind
< 1ft
Friday
High: 57 °F
S 15kt
1-2ft
Friday Night
Low: 51 °F
SSW 20kt
2-4ft
Saturday
High: 56 °F
SSW 20kt
4ft
Saturday Night
Low: 41 °F
SW 10kt
1ft
Sunday
High: 52 °F
SSW 15kt
1-2ft
Sunday Night
Low: 47 °F
SSW 20kt
2-3ft
Monday
High: 57 °F
SSW 20kt
2-3ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 7:36 am CST Mar 5, 2026
Forecast Valid: 9am CST Mar 5, 2026-6pm CDT Mar 11, 2026

View Nearby Observations

Detailed Forecast

Today

NE wind 5 to 10 kt becoming N in the afternoon. Scattered showers, mainly before 1pm. Widespread dense fog. Waves 1 ft or less.

Tonight

Variable winds 5 kt or less. Widespread dense fog, mainly between 10pm and 2am. Waves 1 ft or less.

Friday

SE wind 5 to 15 kt becoming S in the afternoon. Showers likely and possibly a thunderstorm before noon, then a slight chance of showers and thunderstorms between noon and 3pm, then a slight chance of showers after 3pm. Patchy fog before noon. Waves 1 to 2 ft.

Friday Night

SSW wind 15 to 20 kt. A chance of showers and thunderstorms, then showers and possibly a thunderstorm after midnight. Waves 2 to 4 ft.

Saturday

SSW wind 10 to 20 kt becoming WNW in the afternoon. A chance of showers before noon. Waves 4 ft subsiding to 1 ft.

Saturday Night

WNW wind around 10 kt becoming SW after midnight. Partly cloudy. Waves around 1 ft.

Sunday

SSW wind around 15 kt. Sunny. Waves 1 to 2 ft.

Sunday Night

SSW wind 15 to 20 kt. Mostly clear. Waves 2 to 3 ft.

Monday

SSW wind 15 to 20 kt. Sunny. Waves 2 to 3 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.