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Chicago, IL Local Forecast Office

12NM NNE Gary IN

Marine Point Forecast

[NOTICE]

Tonight
Low: 39 °F
SE 20kt
2-3ft
Friday
High: 45 °F
SSE 15kt
1-2ft
Friday Night
Low: 40 °F
NW 10kt
1ft
Saturday
High: 48 °F
SE 15kt
< 1ft
Saturday Night
Low: 45 °F
SE 15kt
1-2ft
Sunday
High: 50 °F
NW 15kt
1-2ft
Sunday Night
Low: 24 °F
⇑NW 30kt
8ft
Monday
High: 28 °F
NW 30kt
8-9ft
Monday Night
Low: 20 °F
NW 25kt
8ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 8:14 pm CST Dec 25, 2025
Forecast Valid: 9pm CST Dec 25, 2025-6pm CST Jan 1, 2026

View Nearby Observations

Detailed Forecast

Tonight

SE wind 15 to 20 kt, with gusts as high as 25 kt. Rain likely, mainly after 4am. Patchy fog after 5am. Waves 2 to 3 ft.

Friday

SSE wind 10 to 15 kt becoming NW in the afternoon. Winds could gust as high as 20 kt. Rain likely, mainly before 7am. Patchy fog before 1pm. Waves 1 to 2 ft.

Friday Night

NW wind 5 to 10 kt becoming E after midnight. Cloudy. Waves around 1 ft.

Saturday

SE wind 5 to 15 kt. Mostly cloudy. Waves 1 ft or less.

Saturday Night

SE wind around 15 kt becoming S after midnight. A chance of rain after midnight. Waves 1 to 2 ft.

Sunday

S wind 10 to 15 kt becoming NW in the afternoon. Rain. Waves 1 to 2 ft.

Sunday Night

NW wind 20 to 25 kt increasing to 25 to 30 kt after midnight. Rain likely, possibly mixed with snow, mainly before midnight. Widespread freezing spray after 3am. Waves 3 ft building to 8 ft.

Monday

NW wind 25 to 30 kt. A chance of snow. Widespread freezing spray before 11am. Waves 8 to 9 ft. occasionally to 12ft.

Monday Night

NW wind 20 to 25 kt. Widespread freezing spray between 1am and 2am, then Widespread freezing spray between 3am and 5am. Mostly cloudy. Waves 8 ft subsiding to 5 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.