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

Hazardous Weather Outlook

For More Weather Information:

Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

Today
High: 83 °F
SSW 15kt
< 1ft
Tonight
Low: 74 °F
SSW 15kt
1ft
Tuesday
High: 84 °F
NW 15kt
1-2ft
Tuesday Night
Low: 65 °F
N 20kt
7ft
Wednesday
High: 71 °F
N 15kt
5-7ft
Wednesday Night
Low: 63 °F
NNE 10kt
2-4ft
Thursday
High: 78 °F
Light Wind
< 1ft
Thursday Night
Low: 70 °F
Light Wind
< 1ft
Friday
High: 80 °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: 5:21 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 5 to 15 kt, with gusts as high as 20 kt. Isolated showers and thunderstorms between 10am and 1pm. Widespread smoke before 1pm. Waves 1 ft or less.

Tonight

SSW wind around 15 kt, with gusts as high as 20 kt. Scattered showers and thunderstorms, mainly after 1am. Waves around 1 ft.

Tuesday

W wind 10 to 15 kt becoming NNW in the afternoon. Winds could gust as high as 20 kt. Isolated showers after 4pm. Waves 1 to 2 ft.

Tuesday Night

N wind 15 to 20 kt. Isolated showers before 1am. Waves 3 ft building to 7 ft.

Wednesday

N wind around 15 kt. Sunny. Waves 5 to 7 ft. occasionally to 9ft.

Wednesday Night

NNE wind 5 to 10 kt becoming WNW 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. Winds could gust as high as 10 kt. 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.