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Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

Overnight
Low: 39 °F
NNW 15kt
2ft
Wednesday
High: 44 °F
NNW 20kt
2-4ft

Small Craft Advisory
Wednesday Night
Low: 32 °F
NNW 20kt
2-4ft

Small Craft Advisory
Thursday
High: 46 °F
W 10kt
1-2ft
Thursday Night
Low: 40 °F
⇑S 25kt
1-3ft
Friday
High: 48 °F
SW 25kt
2-3ft
Friday Night
Low: 31 °F
WNW 15kt
1ft
Saturday
High: 40 °F
E 10kt
2ft
Saturday Night
Low: 36 °F
E 20kt
6ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 11:01 pm CDT Mar 10, 2026
Forecast Valid: 11pm CDT Mar 10, 2026-6pm CDT Mar 17, 2026

View Nearby Observations

Detailed Forecast

Overnight

N wind 10 to 15 kt becoming S after midnight. Showers and thunderstorms before 3am, then showers and possibly a thunderstorm, mainly after 3am. Some of the storms could be severe. Areas of fog. Waves around 2 ft.

Wednesday

NNW wind 15 to 20 kt, with gusts as high as 30 kt. Rain showers, possibly mixed with sleet before 3pm, then a slight chance of rain and snow showers between 3pm and 4pm. Some thunder is also possible. Waves 2 to 4 ft.

Wednesday Night

NNW wind 10 to 20 kt becoming W after midnight. Cloudy during the early evening, then gradual clearing. Waves 2 to 4 ft.

Thursday

W wind 5 to 10 kt. Sunny. Waves 1 to 2 ft.

Thursday Night

S wind 10 to 15 kt increasing to 20 to 25 kt after midnight. Winds could gust as high as 35 kt. Showers likely, mainly after 1am. Waves 1 to 3 ft.

Friday

SW wind 20 to 25 kt becoming WNW in the afternoon. Winds could gust as high as 35 kt. Mostly sunny. Waves 2 to 3 ft.

Friday Night

WNW wind 10 to 15 kt. Mostly cloudy. Waves around 1 ft.

Saturday

N wind 5 to 10 kt becoming ESE in the afternoon. A chance of snow showers. Waves around 2 ft.

Saturday Night

E wind 15 to 20 kt. Rain and snow showers likely, mainly after 1am. Waves 2 ft building to 6 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.