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

4NM NNW Evanston IL

Marine Point Forecast

[NOTICE]

This Afternoon
High: 67 °F
E 15kt
3ft
Tonight
Low: 63 °F
ESE 20kt
3-4ft

Small Craft Advisory
Saturday
High: 70 °F
ESE 20kt
4ft

Small Craft Advisory
Saturday Night
Low: 64 °F
N 10kt
1-2ft
Sunday
High: 68 °F
NE 25kt
8ft
Sunday Night
Low: 59 °F
ENE 25kt
7-8ft
Monday
High: 62 °F
ENE 25kt
7-8ft
Monday Night
Low: 56 °F
ENE 25kt
6-8ft
Tuesday
High: 61 °F
NE 25kt
6-7ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 2:51 pm CDT Sep 18, 2026
Forecast Valid: 3pm CDT Sep 18, 2026-6pm CDT Sep 24, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

E wind around 15 kt. A chance of showers, mainly before 4pm. Waves around 3 ft.

Tonight

ENE wind 15 to 20 kt becoming ESE after midnight. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am. Waves 3 to 4 ft.

Saturday

ESE wind 10 to 20 kt becoming SSE in the afternoon. Showers and thunderstorms, mainly before 1pm. Waves 4 ft subsiding to 1 ft.

Saturday Night

ESE wind around 10 kt becoming N after midnight. Showers and thunderstorms likely, then showers and possibly a thunderstorm after 10pm. Some of the storms could produce heavy rainfall. Waves 1 to 2 ft.

Sunday

NE wind 15 to 25 kt. Showers likely and possibly a thunderstorm before 1pm, then a chance of showers. Waves 4 ft building to 8 ft.

Sunday Night

ENE wind 20 to 25 kt. A chance of showers, mainly after 1am. Waves 7 to 8 ft. occasionally to 10ft.

Monday

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

Monday Night

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

Tuesday

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

*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.