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Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

This Afternoon
High: 72 °F
N 10kt
1ft
Tonight
Low: 67 °F
Light Wind
< 1ft
Thursday
High: 79 °F
Light Wind
< 1ft
Thursday Night
Low: 71 °F
Light Wind
< 1ft
Friday
High: 79 °F
SE 10kt
< 1ft
Friday Night
Low: 69 °F
ESE 15kt
1-3ft
Saturday
High: 73 °F
NE 15kt
3-4ft
Saturday Night
Low: 68 °F
NNE 20kt
4-5ft
Sunday
High: 74 °F
NNE 20kt
4ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 2:26 pm CDT Jul 29, 2026
Forecast Valid: 2pm CDT Jul 29, 2026-6pm CDT Aug 4, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

N wind around 10 kt. Sunny. Waves around 1 ft.

Tonight

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

Thursday

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

Thursday Night

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

Friday

SSW wind 5 to 10 kt becoming SE in the afternoon. Showers likely and possibly a thunderstorm, mainly after 4pm. Waves 1 ft or less.

Friday Night

ESE wind 10 to 15 kt. Showers and possibly a thunderstorm. Waves 1 to 3 ft.

Saturday

E wind around 15 kt becoming NE in the afternoon. Winds could gust as high as 20 kt. Showers likely and possibly a thunderstorm before 10am, then a chance of showers and thunderstorms after 10am. Waves 3 to 4 ft.

Saturday Night

NNE wind 15 to 20 kt. Partly cloudy. Waves 4 to 5 ft.

Sunday

NNE wind 15 to 20 kt. Mostly sunny. Waves around 4 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.