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 >

For More Weather Information:

Grand Rapids, MI Local Forecast Office

South Haven MI

Marine Point Forecast

[NOTICE]

Today
High: 71 °F
NE 9kt
< 1ft
Tonight
Low: 56 °F
E 12kt
< 1ft
Saturday
High: 66 °F
E 13kt
< 1ft
Saturday Night
Low: 57 °F
E 10kt
< 1ft
Sunday
High: 65 °F
ENE 14kt
< 1ft
Sunday Night
Low: 54 °F
ENE 15kt
< 1ft
Monday
High: 62 °F
ENE 16kt
1ft
Monday Night
Low: 50 °F
ENE 17kt
< 1ft
Tuesday
High: 63 °F
ENE 14kt
< 1ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 11:03 am CDT Sep 18, 2026
Forecast Valid: 11am CDT Sep 18, 2026-6pm CDT Sep 24, 2026

View Nearby Observations

Detailed Forecast

Today

NE wind 7 to 9 kt. Mostly sunny. Waves 1 ft or less.

Tonight

E wind 9 to 12 kt. A chance of showers, then showers likely and possibly a thunderstorm after 4am. Waves 1 ft or less.

Saturday

E wind 10 to 13 kt, with gusts as high as 19 kt. Showers and possibly a thunderstorm before noon, then a chance of showers and thunderstorms between noon and 1pm, then showers and possibly a thunderstorm after 1pm. Waves 1 ft or less.

Saturday Night

E wind around 10 kt. Showers and possibly a thunderstorm. Waves 1 ft or less.

Sunday

ENE wind 11 to 14 kt, with gusts as high as 21 kt. Showers likely, mainly before 1pm. Waves 1 ft or less.

Sunday Night

ENE wind around 15 kt, with gusts as high as 21 kt. A chance of showers after 1am. Waves 1 ft or less.

Monday

ENE wind around 16 kt, with gusts as high as 25 kt. A chance of showers. Waves around 1 ft.

Monday Night

ENE wind 12 to 17 kt, with gusts as high as 26 kt. Mostly cloudy. Waves 1 ft or less.

Tuesday

ENE wind 12 to 14 kt, with gusts as high as 23 kt. A chance of showers. Waves 1 ft or less.

*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.