For More Weather Information:

Chicago, IL Local Forecast Office

17NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

Today
High: 37 °F
NW 20kt
7ft

Gale Warning
Tonight
Low: 35 °F
NW 20kt
5-7ft

Gale Warning
Thursday
High: 44 °F
WNW 10kt
1-3ft
Thursday Night
Low: 41 °F
⇑S 30kt
7ft
Friday
High: 47 °F
SW 30kt
6-7ft
Friday Night
Low: 33 °F
NNW 20kt
5ft
Saturday
High: 40 °F
N 10kt
1-2ft
Saturday Night
Low: 36 °F
⇑E 25kt
6ft
Sunday
High: 46 °F
N 35kt
10ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 9:22 am CDT Mar 11, 2026
Forecast Valid: 10am CDT Mar 11, 2026-6pm CDT Mar 17, 2026

View Nearby Observations

Detailed Forecast

Today

NW wind around 20 kt, with gusts as high as 30 kt. Rain and snow, possibly mixed with sleet before 3pm, then a chance of snow between 3pm and 4pm, then a chance of rain and snow after 4pm. Patchy fog before 1pm. Waves 4 ft building to 7 ft.

Tonight

NW wind 15 to 20 kt, with gusts as high as 30 kt. Cloudy during the early evening, then gradual clearing. Waves 5 to 7 ft. occasionally to 9ft.

Thursday

WNW wind 5 to 10 kt becoming S in the afternoon. Sunny. Waves 1 to 3 ft.

Thursday Night

S wind 15 to 20 kt increasing to 25 to 30 kt after midnight. Winds could gust as high as 40 kt. Rain likely, mainly after 1am. Waves 1 ft building to 7 ft.

Friday

SW wind 25 to 30 kt becoming WNW in the afternoon. Winds could gust as high as 40 kt. Mostly sunny. Waves 6 to 7 ft. occasionally to 9ft.

Friday Night

NNW wind 10 to 20 kt. Mostly cloudy. Waves 5 ft subsiding to 2 ft.

Saturday

N wind around 10 kt becoming ESE in the afternoon. A slight chance of snow before 1pm, then a chance of rain and snow. Waves 1 to 2 ft.

Saturday Night

E wind 15 to 20 kt increasing to 20 to 25 kt after midnight. Rain and snow likely, mainly after 1am. Waves 2 ft building to 6 ft.

Sunday

E wind 25 to 35 kt becoming N in the afternoon. Rain. Waves 6 ft building to 10 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.