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Chicago, IL Local Forecast Office

17NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

This Afternoon
High: 40 °F
Light Wind
1ft
Tonight
Low: 41 °F
⇑S 30kt
8ft

Storm Warning
Friday
High: 46 °F
W 35kt
7-8ft

Storm Warning
Friday Night
Low: 34 °F
WNW 25kt⇓
6ft

Storm Warning
Saturday
High: 38 °F
N 10kt
1-2ft
Saturday Night
Low: 37 °F
E 20kt
4ft
Sunday
High: 48 °F
S 30kt
4-5ft
Sunday Night
Low: 24 °F
⇑NNW 40kt
14ft
Monday
High: 30 °F
NW 40kt
15ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 2:27 pm CDT Mar 12, 2026
Forecast Valid: 4pm CDT Mar 12, 2026-6pm CDT Mar 19, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

Variable winds 5 kt or less. Mostly sunny. Waves around 1 ft.

Tonight

S wind 10 to 20 kt increasing to 20 to 30 kt after midnight. Winds could gust as high as 45 kt. Rain likely, mainly before 2am. Waves 1 ft building to 8 ft.

Friday

WSW wind 30 to 35 kt becoming WNW in the afternoon. Winds could gust as high as 45 kt. A chance of rain before 7am. Waves 7 to 8 ft. occasionally to 10ft.

Friday Night

WNW wind 20 to 25 kt decreasing to 10 to 15 kt after midnight. Winds could gust as high as 30 kt. Mostly cloudy. Waves 6 ft subsiding to 3 ft.

Saturday

N wind 5 to 10 kt becoming ESE in the afternoon. A slight chance of snow after 1pm. Waves 1 to 2 ft.

Saturday Night

E wind 10 to 20 kt. A chance of rain and snow before 10pm, then rain likely. Waves 1 ft building to 4 ft.

Sunday

ESE wind 20 to 30 kt becoming S in the afternoon. Rain likely, then rain and possibly a thunderstorm after 1pm. Waves 4 to 5 ft.

Sunday Night

W wind 30 to 35 kt becoming NNW 35 to 40 kt after midnight. Rain before 1am, then snow. Widespread freezing spray after 3am. Waves 6 ft building to 14 ft.

Monday

NW wind 35 to 40 kt. Snow likely. Widespread freezing spray before 7am, then Widespread freezing spray after 8am. Waves 15 ft subsiding to 9 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.