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Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

Tonight
Low: 40 °F
NNE 20kt
2-4ft

Small Craft Advisory
Wednesday
High: 43 °F
NNE 20kt
4-5ft

Small Craft Advisory
Wednesday Night
Low: 42 °F
E 15kt
3ft
Thursday
High: 72 °F
S 25kt
2-3ft
Thursday Night
Low: 49 °F
S 20kt
1-3ft
Friday
High: 60 °F
ENE 10kt
< 1ft
Friday Night
Low: 48 °F
ESE 15kt
1-2ft
Saturday
High: 60 °F
WSW 15kt
1-2ft
Saturday Night
Low: 36 °F
W 15kt
1ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 7:21 pm CDT Mar 31, 2026
Forecast Valid: 7pm CDT Mar 31, 2026-6pm CDT Apr 7, 2026

View Nearby Observations

Detailed Forecast

Tonight

NNE wind 15 to 20 kt, with gusts as high as 25 kt. A chance of showers and thunderstorms before 10pm, then a slight chance of showers after 5am. Waves 2 to 4 ft.

Wednesday

NNE wind 15 to 20 kt, with gusts as high as 25 kt. A chance of showers, mainly after 4pm. Waves 4 to 5 ft.

Wednesday Night

E wind around 15 kt becoming SE after midnight. Winds could gust as high as 20 kt. A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7pm. Waves around 3 ft.

Thursday

S wind 15 to 25 kt, with gusts as high as 30 kt. Showers and possibly a thunderstorm. Waves 2 to 3 ft.

Thursday Night

S wind 10 to 20 kt becoming WSW after midnight. Winds could gust as high as 30 kt. Showers likely and possibly a thunderstorm before 1am. Waves 1 to 3 ft.

Friday

WSW wind 5 to 10 kt becoming ENE in the afternoon. A chance of showers and thunderstorms after 1pm. Waves 1 ft or less.

Friday Night

ENE wind 10 to 15 kt becoming S after midnight. Showers and possibly a thunderstorm. Waves 1 to 2 ft.

Saturday

SSW wind around 15 kt becoming W in the afternoon. Winds could gust as high as 25 kt. Showers likely, mainly before 1pm. Waves 1 to 2 ft.

Saturday Night

W wind around 15 kt, with gusts as high as 20 kt. A chance of showers. Waves around 1 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.