For More Weather Information:

Chicago, IL Local Forecast Office

17NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

This Afternoon
High: 44 °F
Light Wind
< 1ft
Tonight
Low: 39 °F
ESE 10kt
< 1ft
Wednesday
High: 53 °F
S 10kt
1ft
Wednesday Night
Low: 48 °F
SSW 10kt
1ft
Thursday
High: 57 °F
N 15kt
1-2ft
Thursday Night
Low: 33 °F
N 25kt
10ft
Friday
High: 36 °F
N 25kt
9ft
Friday Night
Low: 33 °F
W 10kt
2-4ft
Saturday
High: 47 °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: 2:32 pm CDT Mar 24, 2026
Forecast Valid: 4pm CDT Mar 24, 2026-6pm CDT Mar 31, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

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

Tonight

ESE wind 5 to 10 kt. Mostly cloudy. Waves 1 ft or less.

Wednesday

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

Wednesday Night

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

Thursday

S wind 10 to 15 kt becoming N in the afternoon. A chance of rain and thunderstorms between 1pm and 4pm, then rain likely and possibly a thunderstorm after 4pm. Waves 1 to 2 ft.

Thursday Night

N wind 20 to 25 kt. Rain likely, mainly before 7pm. Waves 4 ft building to 10 ft.

Friday

N wind 15 to 25 kt. Partly sunny. Waves 9 ft subsiding to 5 ft.

Friday Night

N wind 5 to 10 kt becoming W after midnight. Mostly clear. Waves 2 to 4 ft.

Saturday

W wind 5 to 10 kt becoming SSW in the afternoon. 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.