Heat Continues Across the Southern Plains and Gulf Coast; Heavy Rainfall from the Tennessee Valley to Southeast on Friday

Hazardous heat will continue across the Southern Plains, Gulf Coast and Desert Southwest through the weekend. Additional heat will build into the Great Basin and Northern Plains this weekend. A stalled front is expected to bring periods of heavy to excessive rainfall and flooding from the Tennessee Valley to the Southeast U.S on Friday. Read More >

For More Weather Information:

Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

Friday
High: 75 °F
ESE 10kt
< 1ft
Friday Night
Low: 66 °F
SSW 10kt
< 1ft
Saturday
High: 80 °F
SSW 10kt
< 1ft
Saturday Night
Low: 73 °F
SW 10kt
< 1ft
Sunday
High: 87 °F
SW 10kt
< 1ft
Sunday Night
Low: 77 °F
SW 10kt
< 1ft
Monday
High: 89 °F
SW 10kt
< 1ft
Monday Night
Low: 76 °F
WSW 10kt
1ft
Tuesday
High: 82 °F
NNE 15kt
1-2ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 2:46 am CDT Jul 24, 2026
Forecast Valid: 4am CDT Jul 24, 2026-6pm CDT Jul 30, 2026

View Nearby Observations

Detailed Forecast

Friday

SSW wind 5 to 10 kt becoming ESE in the afternoon. Cloudy through mid morning, then gradual clearing. Waves 1 ft or less.

Friday Night

SSW wind 5 to 10 kt. Mostly clear. Waves 1 ft or less.

Saturday

SSW wind 5 to 10 kt. Mostly cloudy, then becoming sunny during the afternoon. Waves 1 ft or less.

Saturday Night

SW wind 5 to 10 kt. Mostly cloudy. Waves 1 ft or less.

Sunday

SW wind 5 to 10 kt. A slight chance of showers and thunderstorms after 1pm. Waves 1 ft or less.

Sunday Night

SW wind 5 to 10 kt. A slight chance of showers and thunderstorms. Waves 1 ft or less.

Monday

SW wind 5 to 10 kt, with gusts as high as 20 kt. A slight chance of showers and thunderstorms. Waves 1 ft or less.

Monday Night

WSW wind around 10 kt becoming NW after midnight. Winds could gust as high as 15 kt. Partly cloudy. Waves around 1 ft.

Tuesday

NNE wind 10 to 15 kt. Mostly sunny. Waves 1 to 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.