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Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

Today
High: 66 °F
SW 15kt
1ft

Small Craft Advisory
Tonight
Low: 37 °F
N 15kt
5ft

Small Craft Advisory
Wednesday
High: 38 °F
NE 20kt
4-6ft

Small Craft Advisory
Wednesday Night
Low: 41 °F
ENE 15kt
4ft
Thursday
High: 69 °F
S 20kt
2-3ft
Thursday Night
Low: 49 °F
SSW 20kt
1-2ft
Friday
High: 55 °F
ENE 10kt
< 1ft
Friday Night
Low: 48 °F
E 15kt
1-3ft
Saturday
High: 64 °F
S 15kt
1-3ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 4:26 am CDT Mar 31, 2026
Forecast Valid: 5am CDT Mar 31, 2026-6pm CDT Apr 6, 2026

View Nearby Observations

Detailed Forecast

Today

SSW wind around 15 kt becoming NW in the afternoon. Winds could gust as high as 25 kt. Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4pm. Waves around 1 ft.

Tonight

N wind 10 to 15 kt, with gusts as high as 25 kt. Showers and possibly a thunderstorm before 9pm, then a chance of showers and thunderstorms between 9pm and 10pm, then a chance of showers after 10pm. Waves 1 ft building to 5 ft.

Wednesday

NE wind 15 to 20 kt. Showers likely. Waves 4 to 6 ft. occasionally to 8ft.

Wednesday Night

NE wind around 15 kt becoming E after midnight. Winds could gust as high as 20 kt. Showers and possibly a thunderstorm. Waves around 4 ft.

Thursday

SE wind 15 to 20 kt becoming S in the afternoon. Winds could gust as high as 30 kt. Showers and possibly a thunderstorm. Waves 2 to 3 ft.

Thursday Night

SSW wind 10 to 20 kt becoming WSW after midnight. Showers and possibly a thunderstorm before 1am, then a slight chance of showers. Waves 1 to 2 ft.

Friday

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

Friday Night

NE wind 10 to 15 kt becoming SE after midnight. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Waves 1 to 3 ft.

Saturday

S wind 10 to 15 kt becoming WSW in the afternoon. Showers. Waves 1 to 3 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.