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Chicago, IL Local Forecast Office

17NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

Overnight
Low: 51 °F
S 10kt
< 1ft
Friday
High: 66 °F
S 15kt
1-3ft
Friday Night
Low: 58 °F
S 15kt
1-2ft
Saturday
High: 73 °F
SSW 10kt
< 1ft
Saturday Night
Low: 59 °F
Light Wind
< 1ft
Sunday
High: 79 °F
SSE 15kt
1-2ft
Sunday Night
Low: 62 °F
S 15kt
3ft
Monday
High: 77 °F
S 20kt
2-4ft
Monday Night
Low: 63 °F
SSW 20kt
4ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 11:46 pm CDT May 14, 2026
Forecast Valid: 12am CDT May 15, 2026-6pm CDT May 21, 2026

View Nearby Observations

Detailed Forecast

Overnight

S wind around 10 kt. Mostly cloudy. Waves 1 ft or less.

Friday

S wind 10 to 15 kt. Cloudy, then gradually becoming mostly sunny. Waves 1 to 3 ft.

Friday Night

S wind around 15 kt. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4am. Waves 1 to 2 ft.

Saturday

SSW wind 5 to 10 kt becoming SE in the afternoon. Showers likely before 4pm, then a chance of showers and thunderstorms between 4pm and 5pm. Waves 1 ft or less.

Saturday Night

Variable winds 5 kt or less. A chance of showers and thunderstorms between 7pm and 10pm, then a chance of showers after 10pm. Waves 1 ft or less.

Sunday

SSE wind 10 to 15 kt. A slight chance of showers before 1pm. Waves 1 to 2 ft.

Sunday Night

S wind around 15 kt. Mostly clear. Waves around 3 ft.

Monday

S wind 15 to 20 kt. A chance of showers and thunderstorms after 1pm. Waves 2 to 4 ft.

Monday Night

SSW wind around 20 kt. A chance of showers and thunderstorms. Waves around 4 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.