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Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

Thursday
High: 95 °F
SW 15kt
< 1ft
Thursday Night
Low: 76 °F
SW 10kt
< 1ft
Friday
High: 90 °F
SSW 10kt
< 1ft
Friday Night
Low: 72 °F
SW 10kt
< 1ft
Independence Day
High: 83 °F
E 10kt
< 1ft
Saturday Night
Low: 70 °F
W 10kt
< 1ft
Sunday
High: 81 °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: 3:06 am CDT Jul 2, 2026
Forecast Valid: 4am CDT Jul 2, 2026-6pm CDT Jul 8, 2026

View Nearby Observations

Detailed Forecast

Thursday

SW wind 5 to 15 kt, with gusts as high as 20 kt. Sunny. Waves 1 ft or less.

Thursday Night

SW wind 5 to 10 kt becoming NW after midnight. Winds could gust as high as 15 kt. A chance of showers and thunderstorms, mainly after midnight. Waves 1 ft or less.

Friday

SSW wind 5 to 10 kt, with gusts as high as 15 kt. Showers and thunderstorms likely, mainly after 4pm. Waves 1 ft or less.

Friday Night

SW wind 5 to 10 kt becoming WNW in the evening. Showers and thunderstorms likely before 10pm, then showers likely and possibly a thunderstorm after 10pm. Waves 1 ft or less.

Independence Day

W wind 5 to 10 kt becoming E in the afternoon. Showers and thunderstorms likely, mainly after 1pm. Waves 1 ft or less.

Saturday Night

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

Sunday

WNW wind 5 to 10 kt becoming N in the afternoon. A slight chance of showers and thunderstorms after 1pm. Waves around 1 ft.

Sunday Night

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

Monday

NNE wind 5 to 10 kt. Mostly 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.