Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. 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]

Saturday
High: 70 °F
E 15kt
1-3ft
Saturday Night
Low: 69 °F
NNE 10kt
< 1ft
Sunday
High: 68 °F
NE 25kt
8ft
Sunday Night
Low: 60 °F
ENE 25kt
7-9ft
Monday
High: 64 °F
ENE 25kt
7-8ft
Monday Night
Low: 57 °F
ENE 30kt
7-9ft
Tuesday
High: 62 °F
ENE 20kt
6-7ft
Tuesday Night
Low: 57 °F
NE 25kt
7ft
Wednesday
High: 65 °F
NE 20kt
4ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 1:20 am CDT Sep 19, 2026
Forecast Valid: 2am CDT Sep 19, 2026-6pm CDT Sep 25, 2026

View Nearby Observations

Detailed Forecast

Saturday

E wind 5 to 15 kt becoming SSE in the afternoon. Showers and possibly a thunderstorm before noon, then showers and thunderstorms likely, mainly between noon and 1pm. Some of the storms could produce heavy rainfall. Waves 1 to 3 ft.

Saturday Night

E wind 5 to 10 kt becoming N in the evening. Showers and thunderstorms likely, then showers and possibly a thunderstorm after 8pm. Waves 1 ft or less.

Sunday

NE wind 15 to 25 kt. Showers likely and possibly a thunderstorm. Waves 3 ft building to 8 ft.

Sunday Night

ENE wind around 25 kt. A slight chance of showers. Waves 7 to 9 ft. occasionally to 12ft.

Monday

ENE wind 20 to 25 kt. A slight chance of showers. Waves 7 to 8 ft. occasionally to 10ft.

Monday Night

ENE wind 25 to 30 kt. Mostly cloudy. Waves 7 to 9 ft. occasionally to 12ft.

Tuesday

ENE wind around 20 kt. A slight chance of showers before 1pm. Waves 6 to 7 ft. occasionally to 9ft.

Tuesday Night

NE wind 20 to 25 kt. Mostly cloudy. Waves 7 ft subsiding to 4 ft.

Wednesday

NE wind 15 to 20 kt. Partly sunny. Waves around 4 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.