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Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

Tonight
Low: 30 °F
NE 15kt
5ft

Small Craft Advisory
Tuesday
High: 35 °F
ENE 15kt
2-4ft

Small Craft Advisory
Tuesday Night
Low: 34 °F
SSE 15kt
1-2ft
Wednesday
High: 62 °F
S 15kt
2ft
Wednesday Night
Low: 52 °F
S 20kt
2ft
Thursday
High: 67 °F
SW 15kt
1ft
Thursday Night
Low: 45 °F
Light Wind
< 1ft
Friday
High: 49 °F
WNW 10kt
< 1ft
Friday Night
Low: 42 °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: 7:51 pm CDT Apr 6, 2026
Forecast Valid: 8pm CDT Apr 6, 2026-6pm CDT Apr 13, 2026

View Nearby Observations

Detailed Forecast

Tonight

ENE wind 10 to 15 kt becoming N after midnight. A slight chance of snow showers after 10pm. Waves 2 ft building to 5 ft.

Tuesday

ENE wind 5 to 15 kt. A slight chance of snow showers before 9am. Waves 2 to 4 ft.

Tuesday Night

E wind 5 to 15 kt becoming SSE after midnight. A slight chance of showers after 4am. Waves 1 to 2 ft.

Wednesday

S wind around 15 kt, with gusts as high as 25 kt. A slight chance of showers before 7am. Waves around 2 ft.

Wednesday Night

S wind 15 to 20 kt. A chance of showers, mainly after 1am. Waves around 2 ft.

Thursday

SW wind 10 to 15 kt. A chance of showers, with thunderstorms also possible after 1pm. Waves around 1 ft.

Thursday Night

Variable winds 5 kt or less. Winds could gust as high as 10 kt. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Waves 1 ft or less.

Friday

WNW wind around 10 kt becoming N in the afternoon. A chance of showers. Waves 1 ft or less.

Friday Night

NNE wind 5 to 10 kt. Partly cloudy. 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.