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

8NM N Saint Joseph MI

Marine Point Forecast

[NOTICE]

Today
High: 71 °F
NE 10kt
< 1ft
Tonight
Low: 57 °F
E 12kt
< 1ft
Saturday
High: 68 °F
ESE 12kt
< 1ft
Saturday Night
Low: 59 °F
E 8kt
< 1ft
Sunday
High: 66 °F
ENE 14kt
< 1ft
Sunday Night
Low: 55 °F
ENE 15kt
1ft
Monday
High: 62 °F
ENE 16kt
1ft
Monday Night
Low: 52 °F
ENE 17kt
1ft
Tuesday
High: 62 °F
NE 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: 10:03 am CDT Sep 18, 2026
Forecast Valid: 10am CDT Sep 18, 2026-6pm CDT Sep 24, 2026

View Nearby Observations

Detailed Forecast

Today

NE wind 7 to 10 kt. Mostly sunny. Waves 1 ft or less.

Tonight

E wind 7 to 12 kt. A chance of showers before 4am, then showers likely and possibly a thunderstorm between 4am and 5am, then a chance of showers and thunderstorms after 5am. Waves 1 ft or less.

Saturday

ESE wind 9 to 12 kt, with gusts as high as 19 kt. Showers and thunderstorms before 1pm, then showers between 1pm and 4pm, then showers and possibly a thunderstorm after 4pm. Waves 1 ft or less.

Saturday Night

E wind around 8 kt. Showers and possibly a thunderstorm. Waves 1 ft or less.

Sunday

ENE wind 10 to 14 kt, with gusts as high as 22 kt. Showers likely, mainly before 1pm. Waves 1 ft or less.

Sunday Night

ENE wind 13 to 15 kt, with gusts as high as 22 kt. A chance of showers after 1am. Waves around 1 ft.

Monday

ENE wind 14 to 16 kt, with gusts as high as 25 kt. A chance of showers. Waves around 1 ft.

Monday Night

ENE wind 13 to 17 kt, with gusts as high as 27 kt. A chance of showers. Waves around 1 ft.

Tuesday

NE wind around 14 kt, with gusts as high as 22 kt. A chance of showers. Waves around 1 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.