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Chicago, IL Local Forecast Office

17NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

This Afternoon
High: 56 °F
SSW 10kt
1ft
Tonight
Low: 50 °F
SSW 10kt
1ft
Thursday
High: 57 °F
SW 10kt
< 1ft
Thursday Night
Low: 44 °F
Light Wind
< 1ft
Friday
High: 64 °F
SSE 10kt
< 1ft
Friday Night
Low: 46 °F
SSE 15kt
2-3ft
Saturday
High: 55 °F
WSW 15kt
2-3ft
Saturday Night
Low: 40 °F
WNW 20kt
2-3ft
Sunday
High: 47 °F
WNW 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: 2:36 pm CDT Apr 15, 2026
Forecast Valid: 3pm CDT Apr 15, 2026-6pm CDT Apr 21, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

SSW wind around 10 kt. A chance of showers and thunderstorms, mainly after 4pm. Waves around 1 ft.

Tonight

SSW wind around 10 kt, with gusts as high as 15 kt. Showers and thunderstorms likely before 4am, then a chance of showers. Patchy dense fog between midnight and 1am, then Patchy dense fog after 5am. Waves around 1 ft.

Thursday

SW wind around 10 kt becoming N in the afternoon. Winds could gust as high as 15 kt. A chance of showers and thunderstorms before 3pm, then a slight chance of showers after 4pm. Patchy dense fog before 9am. Waves 1 ft or less.

Thursday Night

Variable winds 5 kt or less. Patchy fog between 8pm and 11pm. Waves 1 ft or less.

Friday

SSE wind 5 to 10 kt, with gusts as high as 15 kt. Partly sunny. Waves 1 ft or less.

Friday Night

SSE wind around 15 kt. Showers likely, then showers and possibly a thunderstorm after 10pm. Waves 2 to 3 ft.

Saturday

WSW wind around 15 kt becoming WNW in the morning. A chance of showers and thunderstorms. Waves 2 to 3 ft.

Saturday Night

WNW wind 15 to 20 kt. Partly cloudy. Waves 2 to 3 ft.

Sunday

WNW wind 10 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.