Tropical System in the Gulf; Dangerous Heat and Air Quality Concerns; Severe Thunderstorms for Midwest to mid-Atlantic

Tropical system in the Gulf expected to gradually strengthen the next couple of days off the Florida Panhandle and Alabama coasts. Instances of flash flooding will be possible through Thursday along the eastern and central Gulf Coast. Severe thunderstorms will develop and move along a cold front crossing the Upper Midwest, and through the Ohio Valley/Mid-Atlantic on Tuesday. Read More >

Hazardous Weather Conditions

For More Weather Information:

Chicago, IL Local Forecast Office

17NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

Today
High: 84 °F
SSW 10kt
< 1ft
Tonight
Low: 77 °F
SSW 20kt
2-3ft
Tuesday
High: 83 °F
W 15kt
1-2ft
Tuesday Night
Low: 70 °F
N 25kt
9ft
Wednesday
High: 76 °F
N 20kt
8ft
Wednesday Night
Low: 71 °F
NNE 15kt
2-4ft
Thursday
High: 81 °F
Light Wind
< 1ft
Thursday Night
Low: 74 °F
Light Wind
< 1ft
Friday
High: 81 °F
Light Wind
< 1ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 6:31 am CDT Jul 20, 2026
Forecast Valid: 6am CDT Jul 20, 2026-6pm CDT Jul 26, 2026

View Nearby Observations

Detailed Forecast

Today

SSW wind around 10 kt, with gusts as high as 15 kt. Patchy smoke after 8am. Waves 1 ft or less.

Tonight

SSW wind 15 to 20 kt, with gusts as high as 25 kt. Showers and thunderstorms likely, mainly before 1am. Patchy smoke before midnight. Waves 2 to 3 ft.

Tuesday

W wind 10 to 15 kt becoming NNW in the afternoon. Winds could gust as high as 20 kt. Partly sunny through mid morning, then becoming sunny. Waves 1 to 2 ft.

Tuesday Night

N wind around 25 kt. A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Waves 5 ft building to 9 ft.

Wednesday

N wind 15 to 20 kt. Mostly sunny. Waves 8 ft subsiding to 5 ft.

Wednesday Night

NNE wind 5 to 15 kt becoming NW after midnight. Mostly clear. Waves 2 to 4 ft.

Thursday

Variable winds 5 kt or less. Sunny. Waves 1 ft or less.

Thursday Night

Variable winds 5 kt or less. Partly cloudy. Waves 1 ft or less.

Friday

Variable winds 5 kt or less. Mostly sunny. Waves 1 ft or less.

*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.