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Chicago, IL Local Forecast Office

12NM NNE Gary IN

Marine Point Forecast

[NOTICE]

This Afternoon
High: 27 °F
Light Wind
2ft
Tonight
Low: 19 °F
S 15kt
1-2ft
Friday
High: 32 °F
SSW 20kt
2ft
Friday Night
Low: 30 °F
SSW 20kt
2-3ft
Saturday
High: 33 °F
WNW 15kt
1-2ft
Saturday Night
Low: 30 °F
NNW 10kt
1ft
Sunday
High: 33 °F
N 20kt
5ft
Sunday Night
Low: 22 °F
N 20kt
4-6ft
Monday
High: 27 °F
S 15kt
4ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 3:12 pm CST Dec 4, 2025
Forecast Valid: 3pm CST Dec 4, 2025-6pm CST Dec 10, 2025

View Nearby Observations

Detailed Forecast

This Afternoon

Variable winds 5 kt or less. Mostly cloudy. Waves around 2 ft.

Tonight

S wind 10 to 15 kt. Partly cloudy. Waves 1 to 2 ft.

Friday

SSW wind 15 to 20 kt. Mostly sunny. Waves around 2 ft.

Friday Night

SSW wind 15 to 20 kt becoming W after midnight. A chance of snow before midnight, then a chance of rain between midnight and 3am, then a chance of snow after 3am. Waves 2 to 3 ft.

Saturday

WNW wind 5 to 15 kt. Mostly cloudy. Waves 1 to 2 ft.

Saturday Night

NW wind 5 to 10 kt becoming SW in the evening. A chance of snow, mainly after midnight. Waves around 1 ft.

Sunday

N wind 10 to 20 kt. A chance of snow. Waves 1 ft building to 5 ft.

Sunday Night

N wind 10 to 20 kt becoming ESE after midnight. Mostly cloudy. Waves 4 to 6 ft. occasionally to 8ft.

Monday

SE wind 10 to 15 kt becoming S in the afternoon. Partly sunny. Waves 4 ft subsiding to 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.