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

For More Weather Information:

Chicago, IL Local Forecast Office

Evanston IL

Marine Point Forecast

[NOTICE]

Today
High: 70 °F
ESE 15kt⇓
4ft

Small Craft Advisory
Tonight
Low: 66 °F
NNE 10kt
< 1ft
Sunday
High: 68 °F
NE 25kt
7ft
Sunday Night
Low: 61 °F
ENE 25kt
7-8ft
Monday
High: 65 °F
ENE 25kt
6-8ft
Monday Night
Low: 58 °F
ENE 25kt
6-7ft
Tuesday
High: 64 °F
NE 25kt
6-8ft
Tuesday Night
Low: 58 °F
ENE 25kt
5-7ft
Wednesday
High: 63 °F
NE 20kt
5-6ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 3:46 am CDT Sep 19, 2026
Forecast Valid: 5am CDT Sep 19, 2026-6pm CDT Sep 25, 2026

View Nearby Observations

Detailed Forecast

Today

ESE wind 10 to 15 kt becoming SSE 5 to 10 kt 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 4 ft subsiding to 1 ft.

Tonight

ESE wind 5 to 10 kt becoming NNW after midnight. 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 before 8am, then a chance of showers. Waves 4 ft building to 7 ft.

Sunday Night

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

Monday

ENE wind 20 to 25 kt. A slight chance of showers. Waves 6 to 8 ft. occasionally to 10ft.

Monday Night

ENE wind 20 to 25 kt. Mostly cloudy. Waves 6 to 7 ft. occasionally to 9ft.

Tuesday

NE wind 20 to 25 kt. Mostly cloudy. Waves 6 to 8 ft. occasionally to 10ft.

Tuesday Night

ENE wind 20 to 25 kt. Mostly cloudy. Waves 5 to 7 ft. occasionally to 9ft.

Wednesday

NE wind around 20 kt. Partly sunny. Waves 5 to 6 ft. occasionally to 8ft.

*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.