For More Weather Information:

Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

This Afternoon
High: 75 °F
Light Wind
1ft
Tonight
Low: 69 °F
Light Wind
< 1ft
Wednesday
High: 87 °F
SSE 10kt
< 1ft
Wednesday Night
Low: 73 °F
SW 10kt
< 1ft
Thursday
High: 87 °F
SW 10kt
< 1ft
Thursday Night
Low: 70 °F
Light Wind
< 1ft
Friday
High: 76 °F
NNE 10kt
< 1ft
Friday Night
Low: 70 °F
NNE 10kt
1ft
Saturday
High: 81 °F
NE 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: 1:21 pm CDT Jul 7, 2026
Forecast Valid: 1pm CDT Jul 7, 2026-6pm CDT Jul 13, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

Variable winds 5 kt or less. Sunny. Waves around 1 ft.

Tonight

Variable winds 5 kt or less. Mostly clear. Waves 1 ft or less.

Wednesday

SW wind 5 to 10 kt becoming SE in the afternoon. Sunny. Waves 1 ft or less.

Wednesday Night

SW wind 5 to 10 kt. Partly cloudy. Waves 1 ft or less.

Thursday

SW wind 5 to 10 kt. Showers likely and possibly a thunderstorm after 1pm. Waves 1 ft or less.

Thursday Night

Variable winds 5 kt or less. Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Waves 1 ft or less.

Friday

NNE wind 5 to 10 kt. A slight chance of showers before 10am, then a slight chance of showers and thunderstorms between 10am and 1pm. Waves 1 ft or less.

Friday Night

NNE wind 5 to 10 kt. A chance of showers and thunderstorms. Waves around 1 ft.

Saturday

N wind 5 to 10 kt becoming ENE in the morning. Partly 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.