Severe Weather and Heavy Rainfall from the Midwest to the Ohio Valley; Mid-Summer Heat Continues

Severe thunderstorm and heavy rainfall threats will persist from the Midwest to Lower Great Lakes through Monday, shifting into the Ohio Valley and Central Appalachians Monday evening into Tuesday. Mid-summer heat will continue across much of the CONUS this week, with record highs possible well into the 100s across the south-central High Plains. Read More >

Hazardous Weather Conditions

For More Weather Information:

Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

Monday
High: 78 °F
Light Wind
< 1ft
Monday Night
Low: 72 °F
Light Wind
< 1ft
Tuesday
High: 80 °F
Light Wind
< 1ft
Tuesday Night
Low: 72 °F
Light Wind
< 1ft
Wednesday
High: 77 °F
NE 10kt
< 1ft
Wednesday Night
Low: 72 °F
Light Wind
< 1ft
Thursday
High: 75 °F
NE 10kt
1ft
Thursday Night
Low: 69 °F
NE 10kt
1ft
Friday
High: 74 °F
ENE 10kt
2ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 1:31 am CDT Aug 10, 2026
Forecast Valid: 2am CDT Aug 10, 2026-6pm CDT Aug 16, 2026

View Nearby Observations

Detailed Forecast

Monday

Variable winds 5 kt or less. A chance of showers and thunderstorms, mainly after 2pm. Waves 1 ft or less.

Monday Night

Variable winds 5 kt or less. A chance of showers and thunderstorms. Waves 1 ft or less.

Tuesday

Variable winds 5 kt or less. Showers and thunderstorms likely, mainly after 10am. Waves 1 ft or less.

Tuesday Night

Variable winds 5 kt or less. Showers likely and possibly a thunderstorm. Waves 1 ft or less.

Wednesday

NNW wind 5 to 10 kt becoming NE in the afternoon. A chance of showers before 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers after 4pm. Waves 1 ft or less.

Wednesday Night

Variable winds 5 kt or less. A slight chance of showers before 1am. Waves 1 ft or less.

Thursday

NE wind 5 to 10 kt. A chance of showers and thunderstorms, mainly after 1pm. Waves around 1 ft.

Thursday Night

NE wind around 10 kt. Mostly cloudy. Waves around 1 ft.

Friday

ENE wind around 10 kt. Mostly cloudy. Waves around 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.