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Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

Today
High: 68 °F
⇑N 20kt
3ft

Gale Warning
Tonight
Low: 33 °F
NNE 25kt
10ft

Gale Warning
Friday
High: 36 °F
N 20kt
8ft
Friday Night
Low: 30 °F
NW 10kt
1-3ft
Saturday
High: 48 °F
SSW 10kt
1ft
Saturday Night
Low: 40 °F
S 10kt
1ft
Sunday
High: 58 °F
S 10kt
1ft
Sunday Night
Low: 48 °F
SSW 10kt
1ft
Monday
High: 67 °F
SSW 10kt
< 1ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 7:56 am CDT Mar 26, 2026
Forecast Valid: 8am CDT Mar 26, 2026-6pm CDT Apr 1, 2026

View Nearby Observations

Detailed Forecast

Today

SSW wind 5 to 10 kt becoming N 15 to 20 kt in the afternoon. Winds could gust as high as 25 kt. A chance of showers and thunderstorms before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then showers and thunderstorms likely after 5pm. Patchy fog between 10am and 4pm. Waves 1 ft or less building to 3 ft.

Tonight

NNE wind around 25 kt, with gusts as high as 35 kt. Showers and thunderstorms likely before 9pm, then a chance of showers between 9pm and 1am. Waves 7 ft building to 10 ft.

Friday

N wind 10 to 20 kt, with gusts as high as 30 kt. Partly sunny. Waves 8 ft subsiding to 4 ft.

Friday Night

NNE wind 5 to 10 kt becoming NW after midnight. Mostly clear. Waves 1 to 3 ft.

Saturday

NW wind 5 to 10 kt becoming S in the afternoon. Sunny. Waves around 1 ft.

Saturday Night

S wind around 10 kt. Mostly cloudy. Waves around 1 ft.

Sunday

S wind around 10 kt, with gusts as high as 15 kt. Mostly sunny. Waves around 1 ft.

Sunday Night

SSW wind around 10 kt, with gusts as high as 15 kt. Partly cloudy. Waves around 1 ft.

Monday

SSW wind around 10 kt becoming N in the afternoon. Winds could gust as high as 15 kt. Mostly sunny. Waves 1 ft or less.

*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.