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Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

This Afternoon
High: 92 °F
SW 10kt
1ft
Tonight
Low: 75 °F
SW 10kt
< 1ft
Friday
High: 91 °F
SW 10kt
< 1ft
Friday Night
Low: 71 °F
WSW 10kt
< 1ft
Independence Day
High: 78 °F
Light Wind
< 1ft
Saturday Night
Low: 69 °F
NNE 10kt
< 1ft
Sunday
High: 79 °F
N 10kt
< 1ft
Sunday Night
Low: 69 °F
N 10kt
1ft
Monday
High: 79 °F
NNE 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: 3:17 pm CDT Jul 2, 2026
Forecast Valid: 4pm CDT Jul 2, 2026-6pm CDT Jul 9, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

SW wind around 10 kt, with gusts as high as 20 kt. Mostly sunny. Waves around 1 ft.

Tonight

SW wind 5 to 10 kt, with gusts as high as 15 kt. Scattered showers and thunderstorms, mainly after 1am. Waves 1 ft or less.

Friday

SW wind 5 to 10 kt. Showers and thunderstorms likely, mainly after 3pm. Waves 1 ft or less.

Friday Night

WSW wind 5 to 10 kt. Showers and thunderstorms likely, mainly before 1am, then showers likely and possibly a thunderstorm after 4am. Waves 1 ft or less.

Independence Day

Variable winds 5 kt or less. Showers likely and possibly a thunderstorm before 10am, then a slight chance of showers and thunderstorms between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Waves 1 ft or less.

Saturday Night

NNE wind 5 to 10 kt becoming WNW in the evening. Showers likely and possibly a thunderstorm. Waves 1 ft or less.

Sunday

N wind 5 to 10 kt. A chance of showers and thunderstorms, mainly after 1pm. Waves 1 ft or less.

Sunday Night

N wind 5 to 10 kt. Partly cloudy. Waves around 1 ft.

Monday

NNE wind around 10 kt, with gusts as high as 15 kt. 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.