Extreme Heat and Excessive Rainfall This Week

A significant heat wave continues for the Rockies, Northern Plains, and Great Lakes into the Mid-Atlantic, peaking in intensity through midweek and lingering across parts of the Northern Plains and Midwest until this weekend. Excessive rainfall my bring life-threatening and locally catastrophic flash and urban flooding across portions of southwestern Texas through early Friday. Read More >

For More Weather Information:

Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

Today
High: 85 °F
Light Wind
< 1ft
Tonight
Low: 77 °F
Light Wind
< 1ft
Thursday
High: 82 °F
ENE 10kt
< 1ft
Thursday Night
Low: 76 °F
NE 10kt⇓
< 1ft
Friday
High: 89 °F
Light Wind
< 1ft
Friday Night
Low: 75 °F
WSW 10kt
< 1ft
Saturday
High: 91 °F
WSW 15kt
< 1ft
Saturday Night
Low: 73 °F
NW 10kt
1-2ft
Sunday
High: 82 °F
N 10kt
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 15, 2026
Forecast Valid: 5am CDT Jul 15, 2026-6pm CDT Jul 21, 2026

View Nearby Observations

Detailed Forecast

Today

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

Tonight

Variable winds 5 kt or less. Patchy smoke after 1am. Waves 1 ft or less.

Thursday

ENE wind 5 to 10 kt. A slight chance of showers and thunderstorms after 4pm. Widespread smoke, mainly between 8am and 11am. Waves 1 ft or less.

Thursday Night

NE wind 5 to 10 kt becoming variable and less than 5 kt after midnight. A slight chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 4am, then a slight chance of showers and thunderstorms after 4am. Areas of smoke before 8pm. Waves 1 ft or less.

Friday

Variable winds 5 kt or less. A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Waves 1 ft or less.

Friday Night

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

Saturday

WSW wind 10 to 15 kt. A chance of showers and thunderstorms after 1pm. Waves 1 ft or less.

Saturday Night

NW wind around 10 kt becoming N in the evening. Winds could gust as high as 15 kt. Partly cloudy. Waves 1 to 2 ft.

Sunday

N wind around 10 kt becoming NE in the afternoon. 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.