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Chicago, IL Local Forecast Office

12NM NNE Gary IN

Marine Point Forecast

[NOTICE]

Today
High: 34 °F
⇑SE 25kt
4ft

Gale Warning
Tonight
Low: 34 °F
W 25kt
3-5ft

Gale Warning
Sunday
High: 35 °F
WNW 25kt
6-7ft
Sunday Night
Low: 27 °F
NW 20kt⇓
6ft
Monday
High: 31 °F
W 10kt
1-3ft
Monday Night
Low: 28 °F
W 10kt
< 1ft
Tuesday
High: 30 °F
WNW 10kt
1ft
Tuesday Night
Low: 25 °F
SW 15kt
1-2ft
Wednesday
High: 32 °F
SW 15kt
2ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 5:12 am CST Nov 29, 2025
Forecast Valid: 5am CST Nov 29, 2025-6pm CST Dec 5, 2025

View Nearby Observations

Detailed Forecast

Today

SE wind 15 to 20 kt increasing to 20 to 25 kt in the afternoon. Winds could gust as high as 30 kt. Snow, mainly after 7am. The snow could be heavy at times. Waves 1 ft building to 4 ft.

Tonight

SE wind 20 to 25 kt becoming W after midnight. Winds could gust as high as 35 kt. Rain and snow, mainly before 4am. Waves 3 to 5 ft.

Sunday

WNW wind 20 to 25 kt. Snow likely, mainly before 9am. Waves 6 to 7 ft. occasionally to 9ft.

Sunday Night

NW wind 15 to 20 kt decreasing to 10 to 15 kt after midnight. A chance of snow before midnight. Waves 6 ft subsiding to 3 ft.

Monday

W wind 5 to 10 kt becoming SSW in the afternoon. A chance of snow after noon. Waves 1 to 3 ft.

Monday Night

SSW wind around 10 kt becoming WNW after midnight. Snow, mainly before midnight. Waves 1 ft or less.

Tuesday

WNW wind around 10 kt. A chance of snow, mainly before noon. Waves around 1 ft.

Tuesday Night

SW wind 10 to 15 kt. Mostly cloudy. Waves 1 to 2 ft.

Wednesday

SW wind around 15 kt, with gusts as high as 20 kt. A chance of snow. Waves around 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.