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Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

Monday
High: 71 °F
SSW 15kt
1ft
Monday Night
Low: 45 °F
SSW 10kt
< 1ft
Tuesday
High: 50 °F
NNE 10kt
< 1ft
Tuesday Night
Low: 48 °F
NNW 15kt
2-3ft
Wednesday
High: 45 °F
NNW 20kt
7ft
Wednesday Night
Low: 39 °F
NW 20kt
7ft
Thursday
High: 44 °F
NW 10kt
1-3ft
Thursday Night
Low: 32 °F
⇑S 20kt
1-3ft
Friday
High: 48 °F
SW 20kt
1-2ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 1:21 am CDT Mar 9, 2026
Forecast Valid: 1am CDT Mar 9, 2026-6pm CDT Mar 15, 2026

View Nearby Observations

Detailed Forecast

Monday

SSW wind around 15 kt, with gusts as high as 20 kt. Sunny. Waves around 1 ft.

Monday Night

SSW wind around 10 kt. Patchy fog after 1am. Waves 1 ft or less.

Tuesday

WSW wind around 10 kt becoming NNE in the afternoon. A chance of showers and thunderstorms after 1pm. Patchy fog. Waves 1 ft or less.

Tuesday Night

NNE wind 10 to 15 kt becoming NNW after midnight. Showers and possibly a thunderstorm. Waves 2 to 3 ft.

Wednesday

NNW wind 15 to 20 kt, with gusts as high as 30 kt. Rain before 4pm, then a chance of rain and snow. Some thunder is also possible. Waves 3 ft building to 7 ft.

Wednesday Night

NW wind 10 to 20 kt. A chance of rain and snow before 10pm, then a slight chance of snow between 10pm and 1am. Waves 7 ft subsiding to 4 ft.

Thursday

NW wind 5 to 10 kt becoming S in the afternoon. Mostly sunny. Waves 1 to 3 ft.

Thursday Night

S wind 10 to 15 kt increasing to 15 to 20 kt after midnight. Winds could gust as high as 30 kt. Showers likely. Waves 1 to 3 ft.

Friday

SW wind 15 to 20 kt becoming WNW in the afternoon. Winds could gust as high as 30 kt. Mostly sunny. Waves 1 to 2 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.