For More Weather Information:

Northern Indiana Local Forecast Office

9NM WSW Saint Joseph MI

Marine Point Forecast

[NOTICE]

Overnight
Low: 69 °F
NE 15kt
3-4ft

Small Craft Advisory
Sunday
High: 77 °F
NNW 10kt
1-2ft
Sunday Night
Low: 69 °F
N 10kt
< 1ft
Monday
High: 83 °F
SSW 10kt
< 1ft
Monday Night
Low: 75 °F
SSW 20kt
1-3ft
Tuesday
High: 80 °F
WSW 15kt
2-3ft
Tuesday Night
Low: 67 °F
N 25kt
8ft
Wednesday
High: 72 °F
N 20kt
7-8ft
Wednesday Night
Low: 66 °F
N 15kt⇓
6ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 11:16 pm CDT Jul 18, 2026
Forecast Valid: 11pm CDT Jul 18, 2026-6pm CDT Jul 25, 2026

View Nearby Observations

Detailed Forecast

Overnight

NE wind 10 to 15 kt. Patchy smoke. Waves 3 to 4 ft.

Sunday

ENE wind 5 to 10 kt becoming NNW in the afternoon. Patchy smoke after 8am. Waves 1 to 2 ft.

Sunday Night

N wind 5 to 10 kt becoming SSE after midnight. Patchy smoke before 11pm, then Patchy smoke after midnight. Waves 1 ft or less.

Monday

SSW wind 5 to 10 kt. Partly sunny. Waves 1 ft or less.

Monday Night

SSW wind 15 to 20 kt, with gusts as high as 25 kt. A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Waves 1 to 3 ft.

Tuesday

WSW wind 10 to 15 kt becoming NNW in the afternoon. Winds could gust as high as 25 kt. A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm. Waves 2 to 3 ft.

Tuesday Night

N wind 20 to 25 kt, with gusts as high as 30 kt. Partly cloudy. Waves 5 ft building to 8 ft.

Wednesday

N wind 15 to 20 kt, with gusts as high as 30 kt. Mostly sunny. Waves 7 to 8 ft.

Wednesday Night

N wind 10 to 15 kt becoming NE 5 to 10 kt after midnight. Winds could gust as high as 25 kt. Mostly clear. Waves 6 ft subsiding to 2 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.