For More Weather Information:

Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

Tonight
Low: 56 °F
SSW 15kt
1-2ft

Small Craft Advisory
Tuesday
High: 80 °F
SW 15kt
1ft
Tuesday Night
Low: 58 °F
SSW 15kt
< 1ft
Wednesday
High: 69 °F
SSW 10kt
< 1ft
Wednesday Night
Low: 57 °F
S 10kt
1ft
Thursday
High: 72 °F
SW 15kt
1ft
Thursday Night
Low: 50 °F
W 10kt
< 1ft
Friday
High: 70 °F
SE 10kt
1ft
Friday Night
Low: 56 °F
SSE 15kt
1-2ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 9:31 pm CDT Apr 13, 2026
Forecast Valid: 10pm CDT Apr 13, 2026-6pm CDT Apr 20, 2026

View Nearby Observations

Detailed Forecast

Tonight

SSW wind around 15 kt, with gusts as high as 25 kt. A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 5am. Waves 1 to 2 ft.

Tuesday

SW wind around 15 kt, with gusts as high as 25 kt. Showers and thunderstorms likely, mainly before 4pm. Waves around 1 ft.

Tuesday Night

SSW wind 10 to 15 kt becoming WSW after midnight. A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7pm. Waves 1 ft or less.

Wednesday

SSW wind around 10 kt, with gusts as high as 15 kt. Showers and possibly a thunderstorm before 1pm, then showers between 1pm and 4pm, then showers and possibly a thunderstorm after 4pm. Waves 1 ft or less.

Wednesday Night

S wind around 10 kt, with gusts as high as 15 kt. Showers and possibly a thunderstorm. Waves around 1 ft.

Thursday

SW wind 10 to 15 kt. A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then a chance of showers and thunderstorms after 1pm. Waves around 1 ft.

Thursday Night

W wind 5 to 10 kt becoming NNE after midnight. Partly cloudy. Waves 1 ft or less.

Friday

E wind 5 to 10 kt becoming SE in the afternoon. Partly sunny. Waves around 1 ft.

Friday Night

SSE wind 10 to 15 kt. A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Waves 1 to 2 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.