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Chicago, IL Local Forecast Office

17NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

This Afternoon
High: 42 °F
W 30kt
8ft

Storm Warning
Tonight
Low: 34 °F
WNW 25kt⇓
7ft

Storm Warning
Saturday
High: 42 °F
N 10kt
2-4ft
Saturday Night
Low: 39 °F
E 20kt
2-4ft
Sunday
High: 56 °F
S 25kt
4-5ft
Sunday Night
Low: 26 °F
W 30kt
13ft
Monday
High: 33 °F
WNW 35kt
12-14ft
Monday Night
Low: 18 °F
WNW 35kt
11ft
Tuesday
High: 28 °F
WNW 25kt⇓
7ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 4:34 pm CDT Mar 13, 2026
Forecast Valid: 4pm CDT Mar 13, 2026-6pm CDT Mar 20, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

W wind around 30 kt, with gusts as high as 45 kt. Sunny. Waves around 8 ft.

Tonight

WNW wind 20 to 25 kt decreasing to 15 to 20 kt after midnight. Winds could gust as high as 40 kt. Increasing clouds. Waves 7 ft subsiding to 4 ft.

Saturday

N wind 5 to 10 kt becoming SSE in the afternoon. A slight chance of snow before 3pm, then a slight chance of snow after 5pm. Waves 2 to 4 ft.

Saturday Night

E wind 15 to 20 kt. A slight chance of rain before 7pm, then a slight chance of rain and snow between 7pm and 9pm, then a chance of rain after 9pm. Waves 2 to 4 ft.

Sunday

SE wind 20 to 25 kt becoming S in the afternoon. Winds could gust as high as 30 kt. Rain likely, with thunderstorms also possible after 4pm. Waves 4 to 5 ft.

Sunday Night

S wind 25 to 30 kt becoming WNW after midnight. Winds could gust as high as 40 kt. Rain before 1am, then rain and snow between 1am and 4am, then snow after 4am. Some thunder is also possible. Waves 6 ft building to 13 ft.

Monday

WNW wind 30 to 35 kt, with gusts as high as 40 kt. Snow. Widespread freezing spray before 1pm, then Widespread freezing spray after 4pm. Waves 12 to 14 ft. occasionally to 18ft.

Monday Night

WNW wind 25 to 35 kt. A chance of snow. Widespread freezing spray. Waves 11 ft subsiding to 8 ft.

Tuesday

WNW wind 20 to 25 kt decreasing to 10 to 15 kt in the afternoon. Widespread freezing spray before noon. Partly sunny. Waves 7 ft subsiding 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.