For More Weather Information:

Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

Today
High: 73 °F
N 15kt
1-2ft
Tonight
Low: 68 °F
NNE 15kt
2ft
Monday
High: 72 °F
N 15kt
2ft
Monday Night
Low: 68 °F
N 10kt
1-2ft
Tuesday
High: 77 °F
Light Wind
1ft
Tuesday Night
Low: 70 °F
Light Wind
< 1ft
Wednesday
High: 88 °F
SSW 10kt
< 1ft
Wednesday Night
Low: 73 °F
SSW 10kt
< 1ft
Thursday
High: 86 °F
W 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: 10:06 am CDT Jul 5, 2026
Forecast Valid: 10am CDT Jul 5, 2026-6pm CDT Jul 11, 2026

View Nearby Observations

Detailed Forecast

Today

N wind 10 to 15 kt. A slight chance of showers. Patchy fog before 1pm. Waves 1 to 2 ft.

Tonight

NNE wind 10 to 15 kt. Partly cloudy. Waves around 2 ft.

Monday

N wind 10 to 15 kt. Sunny. Waves around 2 ft.

Monday Night

N wind 5 to 10 kt. Mostly clear. Waves 1 to 2 ft.

Tuesday

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

Tuesday Night

Variable winds 5 kt or less. Partly cloudy. Waves 1 ft or less.

Wednesday

SSW wind 5 to 10 kt. Mostly sunny. Waves 1 ft or less.

Wednesday Night

SSW wind 5 to 10 kt. A chance of showers and thunderstorms. Waves 1 ft or less.

Thursday

SW wind 5 to 10 kt becoming W in the afternoon. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. 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.