For More Weather Information:

Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

This Afternoon
High: 91 °F
SSW 15kt
1ft

Small Craft Advisory
Tonight
Low: 70 °F
SW 15kt
1ft

Small Craft Advisory
Thursday
High: 87 °F
SSE 15kt
< 1ft
Thursday Night
Low: 64 °F
SSW 20kt
1-2ft
Friday
High: 81 °F
W 15kt
< 1ft
Friday Night
Low: 66 °F
W 10kt
< 1ft
Saturday
High: 85 °F
SW 15kt
< 1ft
Saturday Night
Low: 64 °F
SW 10kt
< 1ft
Sunday
High: 69 °F
N 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: 1:46 pm CDT Jun 10, 2026
Forecast Valid: 1pm CDT Jun 10, 2026-6pm CDT Jun 16, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

SSW wind around 15 kt, with gusts as high as 25 kt. Showers and thunderstorms likely, mainly after 5pm. Waves around 1 ft.

Tonight

SW wind 10 to 15 kt, with gusts as high as 20 kt. Showers and thunderstorms likely, mainly before 3am. Waves around 1 ft.

Thursday

SW wind 10 to 15 kt becoming SSE in the afternoon. Winds could gust as high as 20 kt. A slight chance of showers and thunderstorms after 5pm. Waves 1 ft or less.

Thursday Night

SSW wind 10 to 20 kt becoming WNW after midnight. Showers and thunderstorms, mainly before 11pm. Some of the storms could produce heavy rainfall. Waves 1 to 2 ft.

Friday

W wind 10 to 15 kt. Sunny. Waves 1 ft or less.

Friday Night

W wind 5 to 10 kt becoming SW after midnight. Mostly clear. Waves 1 ft or less.

Saturday

SW wind 10 to 15 kt, with gusts as high as 20 kt. Sunny. Waves 1 ft or less.

Saturday Night

SW wind around 10 kt becoming NW after midnight. Showers and possibly a thunderstorm before 1am, then showers likely. Waves 1 ft or less.

Sunday

N wind around 10 kt, with gusts as high as 20 kt. Mostly sunny. 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.